Sheetz® review: Poor customer service regarding an online order & application of points

Placed an online order for a cup of fries at your store #689. 550 South Airport Drive, Henrico/Richmond, VA. Needed assistance and trying to apply 369 spendable points, if possible, inside the store. I requested to pay in the store so that I could get assistance and applying points to my order. It was my first time trying this and I wanted to get help. I also wanted to purchase gasoline at pump 15. I waited at the counter for assistance and the clerk named Monty was working. He told me and so many words he didn't know how to do it and then left me to go back to the drive-thru window to assist a customer. I waited and then decided to go over to the food counter to let the women know there that I would need to cancel my fries since I could not get assistance. While waiting to get the lady's attention, Monty comes yelling first at the ladies to let them know that they are not to give me the fries because I did not pay for them. And then at me telling me that I could not pick up the fries because I did not pay for them. I knew this and was shocked at the idiotic statement. And told him that I knew this already but because he did not assist me regarding my points could be applied to my order, I went to the counter to let them know that I would need to cancel. Although the app said that it was too late for me to do so. Then he yelled back at me again and I ask him why he was yelling at me. I was very disappointed and embarrassed at his behavior and asked him why didn't he just come over closer instead of yelling across the tables accusing me of attempting to steal fries.