Bad services

I bought 2 dresses fro jet stores in tygervalley 01/03/2018 for a funeral. When I got home the dresses were too small. The following day I went to exchange it at Jet in Bellville but I forgot the slip at home. I informed the security in front that I want to exchange it for bigger sizes but they said I must wait for the manager. When the manager arrived I told him the whole story. He then explained to me that they cant change it without the slip band that I had to go back to Tygervalley which I understand. I decided to just buy new dresses instead because I needed it for the funeral on Saturday but I was denied access to the premises by the security. When I ask them why they said the manager told them not to let me gain access. This was very upsetting to me. The way they were treating me as if I was a ******** who wants to come and ***** from them.