WORST SERVICE

I bought a skirt at the Chris Hani Crossing Mall on Tuesday around 2pm. Today went to exchange the size of the skirt, but I misplaced the slip. I showed proof of payment by sms from my bank of the payment still the refused to exchange the skirt for me . I called your contact center and the lady I spoke to was not helpful as well. What doesn't make sense to me is the fact that I'm not returning the skirt but i just want to exchange it but Mr Price is making it so difficult for a customer to do so. Il be waiting for a response from you as to what I should do with the small skirt.