Services fee

I received a call after taking a loan with nedbank from the agent by the name of Lethukuthula offering one of their cards which it will give me R200 cash back every month. I asked what do I need to do to qualify he said I need yo switch my salary to nedbank, changing my salary was not an option and he said its fine I can just make sure my debit runs from the card his offering I will still qualify I agreed didn't see a problem with that we concluded the call. Few days after my conversation with Lethukuthula I received another call from nedbank can't remember the lady who called wanting to congratulate me on my card and reminding me of the monthly service that will be debited of R150 which Lethukuthula never cared to mentioned to me which he knows I was never going to agree to it I can't be charged R150 just to receive R200 meaning they actually giving me R50, I told the lady I was never told about the R150 if that's the case can they please cancel the card I never agreed to such of find the recording of my conversation where I agreed to that service fee, till today I'm still waiting for the card to be cancelled or the recording to be forwarded to the nearest nedbank so i can listen to it but I receive is nedbank sending me SMS on how I'm owing them. CANCEL YOUR CARD I'M NOT OWING YOU A CENT BESIDES THE LOAN OR YOU TELL YOUR LETHUKUTHULA TO PAY IT