Legit Gateway mall cashiers

Legit in gateway mall the cashiers are pathetic and full of attitude. I went to change my item because it didn't fit. I did look for another size but they do not have the size that fits me. So I requested a refund mind you I had bought the item on the previous day. They told me they don't have cash everytime I go to the store they tell me they don't have money. What about the cash float? Because it seems like in that store every customer that gets in uses card payment. What about refunding to the original payment method as well. Their service is diabolic.