ON HOLD FOR AN HOUR+ !!!???

I have been on hold with your retention's department for a total of almost an hour today. Is there no one that can assist me ??? I need to cancel my MTN contract. If I am not able to get through in time to cancel and pay up my contract then I will hold MTN responsible for the payment of my next debit order because I will not pay for something that I was not able to cancel due to the incompetence of a company and it's staff.