Frustrating and False Advertising

One many occasions I have experienced awful service. I placed an order and cancelled five mins later due to an incorrect address and was fully charged for the order. They did not assist with cancelling and reordering and neither could they assist with correcting the address. On another occasion there was false advertising. I was suppose to receive and R100 coupon for a purchase over R300 and at the purchase page it showed but they charged the full amount on my bank card. I have trying to resolve on the help feature on the app but they do not respond. It has been a month and still awaiting help.