Very bad service from rage boulders midrand by violet and sales consultant

I bought shoes on Friday at Rage I asked a sale consultant for a size 5 and they gave me size 4 I was buying for my mom when we were exchanging the shoes today my car was at the car wash and the slip was ridden off they told me they can’t help me they called a lady her name is Violet she told me that they can’t do anything for me even though I showed them the bank notification from the bank for the transaction they didn’t help me this is rage at boulders midrand