Sheetz review: service

This has happened before but I buy a frozen latte or mocha every single day and most days are good but like today I have received a large cup which I ordered a large and I get less than small of the drink I ordered. If I knew I was going to be receiving a small I I would have ordered a small and not gotten charged for the large. This has happened many times but I cant afford to continue this and not even get what I paid for.