7/27/16 I purchased 10.00 in gas (and a 6.99 car wash code expires 8/5/16). 7/28/16 Returned to get car washed, entered code and it was denied. Pushed "Help" button4-5 times, no one came. Went into cashier, she told me "Help button doesnt work! and someone already used that code yesterday. I explained I bought gas yesterday but didn't have time to use the car wash. Threw receipt at me, told me Pay Again if I wanted to use Car wash. She moved on to another customer. Asked for her help, finally got a phone number that was not equipped to handle situation, 3 phone#'s later filed a complaint with and against Chevron Gas station aka The Enterprises Inc. also phoned my own bank to dispute charges. Freaking hassle over a simple 6.99 car wash, if she hadn't been so rude, dismissive and disrespectful...