Unhelpful staff

On Saturday I made a purchase at the Alberton store of clothing and 2 bras. Not once was I informed that if the bras did not fit that I would not be able to return them. I understand that you cannot return bottoms such as panties/g strings or bikini bottoms due to hygienic reasons but never have I had an issue with returning bras to any shop that I have purchased them from, Surely the staff should have made me aware of this before putting them through the sale. I find it very strange that you can return bikini tops but not bras! And I have previously returned bikini/tankini tops to the Alberton branch without any issue. Yesterday when I went to take my daughter to the Glen, tried to return the items that did not fit and was told that I cannot return the bra and I should go fight with the Alberton branch about it. The male manager or person that authorizes the returns was so rude to me that I was in absolute shock. I proceeded to call the customer care number which seemed to be a waste of time as the lady on the line could only say that she apologizes for the inconvenience but there is nothing that can be done as the store policy is not to take underwear back. When I asked why I was not informed this at the store before purchasing the item, all she could say was sorry but there's nothing that can be done. So basically I must now keep an item that will never be used as it does not fit and I was never told to check it before purchasing it. I spend a lot of money in all the MRP shops and always pay my account before the necessary dates yet I get treated like a stupid idiot. Where is the customer service? Why are staff not trained properly? Why are there no signs to say that due to hygienic reasons, sports bras may not be returned? Where are the stickers on these garments to say you cannot return them? Very unhappy with this experience and how I was treated