MRP - Delivery fee refund declined

I ordered something online from MRP Clothing and opted to get my order delivered to my home under the current circumstances, feeling it would be safer. For this i paid a R45 delivery fee. I received email confirmation that my order was delivered to Tygervalley Centre instead. Upon enquiring this with the MRP Contact Centre, i was told that i must have opted for Click and Collect, by which i said that i had paid a delivery fee and the Click and Collect option was free. I was then told that i chose the incorrect address (in the past i had it delivered to Tygervalley and must not have realised that the Tygervalley address was selected) - I was fine with this mistake and thus asked for my delivery fee to be refunded to me. I was then told that they will not refund me because this was MY mistake. In what world do we live when one is told by a Client Service Agent that I will not be rightfully compensated because of MY mistake. Granted, the agent first went and checked with that i assume is a Team Leader.