Great Brand, horrible employee

Purchased good on the 20th May at Mr Price Ermelo for R889. One of the items did not fit properly so visited your store today on the 30th May to exchange the item. Month end queue was horrible, stuffy, slow and well between the cashiers who kept on shouting and distracting one another, chit-chatting and laughing while I waited patiently for more than 30min to get to the front. Handed my tagged slip and new item to Masdy and he was all smiles but froze in the middle of my transaction and called Nomvula. Asked him what was wrong and Nomvula stepped in to ask for my credit card to process the credit amount left after my exchange. I was puzzled as I do not own a credit card. I informed them both I don't own a credit card and Nomvula rolled her eyes at me in an annoyed tone that she won't help me until I bring my credit card (this by the way is not mentioned in your terms and conditions for exchanges). I informed this rude lady that I used a debit cArd which was in the car. At this time the shop was closed and Nomvula made it clear that this was not her problem but that of ABSA who has programmed their Mechant devices as credit cards instead of debit cards. Yeh n she shouted lous 4 all