This situation got a lot more difficult before it got better. For starters, in hindsight I know I should've started pumping my gas first before going to the bathroom but I've done this plenty of times before and never had this problem (and I really had to go lol). As a side note, I live in Colorado and I have never seen a full service gas station anywhere in my state. And for the couple people calling me stupid about my "lack of a budget", I bought my dad a nice Father's Day gift and so after paying all my bills I was left with basically nothing. The attendant refused to admit that he had put it on the wrong pump so I called the company (Shell for those wondering) and they had the store GM come out to avoid getting the police involved. It took him an hour to show up and the attendant was being an ass the whole time. Cameras showed the GM that the attendant made the mistake (even though he was still trying to deny it). Finally after about 2 hours the GM filled my tank up and gave me a gas card for the 50 as an apology. And he ended up firing the attendant for his lack of professionalism. Sorry for the long reply everyone but thanks for the good wishes and taking the time to share your input! Definitely going to pump my gas first next time.