Poor customer service at Cell C Zevenwacht Mall

Bought two adaptors and USB cables from cell c zevenwacht mall ,The consultant that assisted was sure that the items bought were compatible with iphone.when we go home we discovered that it was for an android device and had to buy new items,as we don't stay close to zevenwacht mall. When going to return the items bought at cell c the consultant refused to return them and only wanted to do an exchange, she admitted that it was her fault but cell c has a policy that prohibits the return of cables and adaptors eventhough most of the items were sealed and it was the very next day after buying it and eventhough we have receipts

When asking for a superiors email instead of the store email we were given the store mail ,showing the lack of interest to assist/resolving the matter