Pathetic service

Good day ,I bought a pair of flip flops for my child at Ackermans Rosebank mall and after a month the strip got separated from the sole .I sent the pair back for an exchange because i didn't have a slip .The shoes are still available in the store but they refused to exchange for me .I called the customer care and the lady was rude and insisted there is nothing they can do .When my white colleague called ,she was told that she will be assisted as the policy states that they can exchange but no refund and they even took down her numbers to call her back .I am shocked with the service and discretion you give to white people but the same policy not applying to people of colour.