Ill make it very short and simple

Im 17(m) my parents are divorced and im with my dad (i visit 2 times a month) i have a 17(f) stepsister

They have me do basically any driving chore because i have a license my sister doesnt, so i take my siblings around etc, i have no problem with it. (Especially for the few days im here im glad to help) But i have an exhausting schedule, i do track and have practice afterschool and i have saturday rehearsals for a musical im in. So im generally tired. (My parents arent home so the “conversations” are done thru text)

This is where the problem arises, i was asleep and they wake me up telling me to clean the cars. I have no problem with it i get up and get the supplies then while im cleaning they tell me “if u WANT, you can take you and ur sister to chik fil a” i say, “i would but im really tired thanks for the offer” my sister comes along and calls me an asshole for not wanting to take her, then they say “give her your card and her boyfriend can take her” (my personal card that they did not open. My mom did and they will cashapp me the money) (mind you this isnt the first time it happens, they had me do it for shopping and i was actually forced to do it, and give her my card) i say “no i dont feel comfortable with her having my card” and thats when i get a text from my dad saying “go take (sister) to eat. And stop been a fucking asshole” if i could show u i would. I text him explaining its not me wanting to be a pain in the ass its just be being tired and i dont want to go.  I then im forced to go and take them to 
chick fil a. Am i the asshole?

TL:DR Im tired cuz of my schedule, i get woken up, to wash then car and asked if i wanted to go me  and my sister to eat. I said no they asked me for my credit card so they can cashapp the money to her i said no because its my card that has money ive earned and i was called an asshole by my parents and sister.