MTN has by far disappointed me in its clientele and service

I have been given the run-around with regard to my router contract and the R1 173,91 amount that I’ve been charged for an MTN 30GB Recurring Data that I did not approve of, I have contacted MTN multiple times on different dates and I have not been assisted, ultimately I was notified that in order to be assisted I have to pay an amount of R1 649.00 so that my account won’t be in arrears and that the MTN Recurring Data 30GB could be removed, WHERE IS THE LOGIC IN ME PAYING FOR SOMETHING I DID NOT APPROVE IN ORDER TO BE ASSISTED