So we have a pretty popular restaurant that lots of people order take out from. Actually about 15 years ago when they first opened they had no seating, so it was all take out. Anyways as they became more popular and more people were coming it started getting really busy and crowded at times, they started letting people call in their order by phone so that a person could just show up and their order was ready. Now when they were very busy if you already called in your order, you wouldn't wait in a line with everyone else that hadn't ordered yet, if a person was ordering or at the register paying you let that finish then let them know you were there for your phone order. Once in a while the occasional new person would be all offended and give you the "hey there's a line here" nonsense because they were on their first trip to the restaurant, but for the most part every one knows how it goes there. 

So, the other day I call in my order for my fam, it's like a $45 total because there's 4 of us. I get to the restaurant about 25 minutes later which is normally plenty of time, even when they are slammed the orders still come out in a quick time. So I go inside and head for the register like I have done hundreds of times. a bunch of people were in a line, I figured that was the line of people waiting to order. Right away 2 door dash dorks start in with the 'there's a line here" crap. "I called in my order" i respond. They get all huffy about it but in my head I'm like this ain't my 1st rodeo so I pretty much pay them no mind &amp; proceed to the register. The girl behind the counter looks at me, I tell her my name &amp; she looks thru the orders waiting to be picked up and says mine isnt there. Then she asks me "did you wait in line?" I'm like no I called it in. Then she tells me i have to wait in line. I go there often enough that I know she is a new employee, and for the past 15+ years that's not the normal procedure. I was pretty irritated by the whole situation so i just walked out. Then I was thinking about it and I wonder if it was just because she was new, or were the 2 door dash guys making her feel pressured to make me wait in line, or am I just an asshole for leaving and not waiting or paying for the order. Just to clarify I have been back to the restaurant today, I called my order in, showed up, skipped the line with no objections from anyone and got my order and left. So AITA for leaving that other time?