Is OTHER wrong in the post ? POST : Long one because I wanted to detail as much as possible, sorry in advance. 

Little bit of background: I work as a store manager in a retail store. I have been a store manager for various  companies for over 12 years now and have to had issues at any of my places of work. I usually become friends with everyone and enjoy working  I love working, I love making people feel like coming to work, enjoying it and looking forward to it.

I found out in late December that my assistant store manager was getting promoted to store manager of his own store. I was beyond excited and happy for him, he works his butt of and deserves it. This caused one issue though: during the winters my company usually only runs with a store manager and assistant store manager, we hire people around February/March and let them go around October. Very seasonal. So because of this promotion, I was going to be working by myself. 

I was told that one slower store was going to be sending me help twice a week. Instead of having double coverage that day, the SM would do open to close, which isn't hard because they get 2-3 people a day during an 8-9 hour shift. Plus, their ASM lives right by my store so it's a better drive for them anyways. 5 inutes compared  to 45. I call them and discuss it, they're not sure what days and are a newer store manager so I talked it through with them "you're taking Sunday and Mondays off, we have ASM trainings on Tuesdays and this person needs Thursdays off, so why don't we do this: Tuesday they go to training, Wednesday and Thursday off, work my store Friday and Saturday, work your store Sunday and Monday so you can have your days off." 

They said they would talk to the asm and then get back to me. Called me later that day "yeah she refuses to work there Friday and Saturday because she wants to be at her home store, so we are going to do Tuesdays and Wednesdays. I point out the ASM trainings would get in the way, she says they won't. 

That week, Tuesday the asm can't make it because of training. Then they call Monday and let me know that they have a doctor's appointment on Wednesday and can only work a half day, then calls back to say they can't work it at all. I scramble and am able to get another store to help out, but have to buy them lunch. 

The next week they announce to me they can't help because the store manager has to do inventory on Tuesday and Wednesday. I point out again, maybe we should switch the days because it doesn't seem to be working. "nope, this is an anomaly, it'll work out" 

It happens yet again this week. Asm training so can't do Tuesday, something came up on Wednesday. I express my frustrations as calmly as possible and say that if we just went with my schedule we would be fine. "I'm not trying to tell you how to manager bu-" "well it sure seems like you are. You're really ungrateful and I can't make everyone happy" 

At this point, I point out 
"hey, I'm not ungrateful, it's just really hard to deal with this when I'm getting told last minute that I'm not getting coverage and it's been happening every single week"
 "oh so I haven't helped you?" 
".....no. You haven't. You haven't covered a single day off when you were supposed to"
"Well I can't please everyone."
"I understand that and I'm not saying you should, I'm saying that if you aren't going to be able to help me, give me some notice and maybe contact our boss so I can get some help"

I end the call because I realize I've started to raise my voice. I tell them "Im not mad at you or upset with you, I'm frustrated with the situation and how there seems to be a very easy solution but we aren't going for it. I'm going to let you go, let me know when you can help me." 

After this, the manager calls back a bunch of times and keeps apologizing, I keep saying "I'm not mad or upset with you, I just want a solution to the answer and you were supposed to help. If you can't, I understand, just let our boss know so I can get help"

After the first week of issues I even had asked my boss if I could work 6 days a week, just to make it easier on us. He said "as long as you're okay with it" and I replied with "hey I would work 7 if you would let me" "well you can't do that but I appreciate you trying to make it as easy as possible" 

This is now the next week, I haven't heard anything about when I'm getting coverage except that this manager called our boss and said they couldn't help. I called my boss this morning and said "hey, just calling to see if we had heard about what day I'm getting coverage yet"

I was met with "hey I wanted to talk to you about that. Manager called and was pretty upset over your conversation. You were pretty aggressive and non sensitive to the fact that they are emotional and hate when they can't help. You need to get better at that and mature as a store manager because that is unacceptable. They've been in bad situations where they wanted to help but couldn't. "

I tried to tell my side of it and got interrupted with "hey, I'm not mad at you, you just handled this wrong and going forward you need to see that."

I was quiet for the rest of the call because it felt like anything I would say would just come off bad. At the end he said "I need you to talk with Manager and figure out what days you're getting help. Obviously Tuesday doesn't work so let's change that day"

I mention that it's that very subject that started this and they're insisting on doing it that day. "Well then you need you to call every other manager and get their schedules and see what day they can help. If not figure out why and what their people are doing on their off days, call all 18 stores and get back to me." 

Am I the asshole here? I gave up my ASM willingly, suggested going down to 1 day off at my own expense, to help the other store manager out. When I felt that I was raising my voice, I stopped, let the person know I wasn't mad or upset with them and got off the phone. I feel like I handled it as well as possible but I feel as though I'm getting the short end of the stick and being pretty damn okay with it. 

Obviously I might have been more aggressive on the phone than I felt I was, but I feel like I wasn't and I'm usually pretty good at knowing when I am. 