Most disgusting service from a Acting SM

I have shopped at Edgar's for a long time and over the recent year this has become a shopping destination of disaster.My most recent incident took my breath away.I had an item i had exchanged and bought a top from Edgar's gateway and went through to Watercrest mall Edgar's to get a refund as the top was not what i really wanted and that's my choice,however the receipt i had was an exchange receipt and the cashier walked away from me when i told her i want a refund and decided to do a history search on the original exchange.I however stood there for five minutes staring into space as I was not informed as to what is being done and upon my questioning i got a response from her saying that she needed the original receipt so I went on to explain to her that there won't be an original receipt as the top was an exchange however I am not happy with the top and she walked away with out listening to me.I then told her if she was looking for an original she won't find it and she could get clarity from gateway.She then offered me a gift card.I said no it's my cash and I want it back she said no it's an exchange and not cash so please explain this response and then I was given my cash