Bad service and on hlod for 10minutes

A phoned mtn to cancel my mtn data contract. Consultant said I can do an month to month I can just phone in and cancel. So I did and was told that I nees to pay R1624 in to cancel the contact but they will listen to the call and come back to me with in 48hour. They will send it to my nearest mtn store for me to listen to. I phoned after 48 to be put on hold for more then 10 minutes. So I phoned again and was told that they can not send it to a mtn store and I agreed to the terms and conditions. They will again send it to a manager. No wonder nobody wants to use mtn anymore.