I was a longtime customer but I'm done with this place and the awful customer service. Despite a few gems like Jerry the window guy and the nice girl working the food area most days the staff is rude and clueless about how to treat customers.
I've purchased countless fill-ups and car washes, car window tinting and used their window repair service 3 times. I used to go in 4-5 times a week for a 44 oz. drink. The final straw was when after I first paid for the drink (I pre-paid because no one was at the register when I walked in and the line is usually 6-8 people deep) I filled my cup only to find there were no lids that size. I asked one of the cashiers if they had more lids, he said they ran out. Holding the full lid-less cup I asked if I could pour them in two 32 oz. cups so I can drink them in the car. He said that would be 50 cents more. I said "But I already paid for the larger size and you're out of big lids" - he snapped "That's not my problem and that doesn't mean you can get free stuff". His tone and attitude was horrible. If this was an isolated incident it would be very forgettable - but this is the kind of service you get there constantly.