MTN CONTARCTS

For the past couple of months i have been trying to cancel a contract with MTN which I have never used, this has been a terrible experience. I have been sent from one department to another and still no help. I was told to make a payment to cancel which I did and still the account is active, I have not used the service. It seems to me that MTN is de*****ing its customers as the lady said on the phone that they is a subscription by a 3rd party that is running the debit order, How is that possible ???? Ref: ***.. This is the worst network provider to date !!!!