Shocking service, not being able to return items

I purchased from ZANDO several times and have never had an issued before. On two of these occasions I purchased swimwear and they have allowed a return of theses items. However they have now since changed there return on this item and do not allow the return anymore. This is confusing to clients especially if they have made previous purchases and have returned or even changed the size. I logged a call on the 3/11/2021 only to be told by the operator that they return can not be done. When I explained my situation she still insisted there is nothing that she would be able to do. When I asked there to escalate the matter I was told that there is NOWHERE to escalate the matter to. When asked if she had a manager, I was told her manager would not be able to do anything. My issue here is they allowed previous returns and now change?? Even clothing stores allow these returns. I can understand if it is underwear, but it was swimwear still in the same condition I have received it. So now I am sitting with swimwear to the value of R664 and it does not fit, and ZANDO has not even attempted to assist me at all!! SHOCKING SERVICE!!!