Cashier at store #96 named Dewight knowingly overcharged for a sale of a refill and refused to return any change. I asked Dewight if he could explain why he refused to charge the correct price for the $0.85 refill after i paid $14.00 for my CEFCO cup and was told by the store manager upon purchase all refills were $0.85. Dewight knowingly lied and told Me after I handed him a dollar I had no change and the sales price was $ 1.50. No one at the store but Dewight is overcharging customers. I have receipts to the affect of how much I pay for a refills daily. He also refused to provide a receipt. Store #96 on 9-13-2019 11pm Dewight is stealing from the register and customers and refusing to do the right thing. As it stands I am still owed change. This is so unprofessional.