Clientele took my money !!!

Met a guy who works at clientele and he took my contact details through my bank card telling me about shopping rewards and he didn't tell me anything about signing a contract. I told him I didn't want to join and he let me go. Two months later I receive money in my bank and then I get a notification from them saying I paid a premium,they took all the money without authorisation. I immediately go to my bank to reverse the money, I'm told it's irreversible because I authorised it and then now I explain to them that I didn't. The lady who helped from my bank prints the "contract " I apparently signed and I see they forged my signature, there's false information that I work as a general worker and I receive monthly income. What really upset me was that i never worked and the money they took wasn't even mine!! I had to pay back the money with money I didn't even have and it really really affected me. I remember after I came back from my bank I went to the bathroom to cry because I got ****med and felt humiliated. I'm grateful to the lady from Capitec who helped me though.