Opening a truworths account is such a nightmare for my life

I have purchased many items from the store in such a very short period of time but never used them immediately after my purchase, I was heading to 6 months when I decided to use the handbag which I used for 2days it's when I saw the handbag is not user-friendly, when I wanted to exchange it the lady refused telling me she doesn't see anything wrong with the handbag and it's still new she doesn't see any physical damages hence I explained what was the reason she refused to exchange it okay I left the handbag with the lady inside the store while she kept giving me an attitude telling me that "she will make sure I pay for the handbag whether i'm taking it or not" now I paid for what I have I have been telling the head office to blacklist me over the amount of R300 and something but they keep on calling me forcing me to pay for the handbag which I don't even have, the lady said "she will make sure I pay for the handbag whether i'm taking it or not "are my consumer rights not being abused ?I have been sending emails to head office to blacklist me like i'm extremely bored by now repeating myself over and over again based on one thing