Puma Boksburg service disgusting

I bought the tight on the 5 May 2019 @ 13:29 everything came to R3010, i paid with my debit card, I worn the tight once on the 7 June, my friend told me that the tight is torn, I phoned the store on the 21 June and I spoke to Sam who advised that I must bring the tight back, they will speak to the manager in charge, I asked my friend to take it back for me, the manager in charge by the name Leroy refused to change it, he told me that the tight has been washed, I told him that it was never washed, I worn it once it must have been the manufacturer fault or the material is not a good quality, I have bought couple of tights which it never gave me problems but only this specific one, I am so disappointed with the service that I received from the manager, I told him that i lost the receipt, he told me that he can’t assist without the receipt, but i paid with my card, which i believe they can trace the receipt on their system, but they were unable to, the purchase is not even 3 months old but it’s untraceable, not sure which kind of people get assistance because I have witnessed most people been assisted with their similar problems but I wasn’t, or do I have to know anyone in order to get help, I would like this to be looked into as this is unacceptable, I have paid a lot of money for something that only lasted a day. I need my tight to be exchanged or refunded