MTN INTENTIONAL *****

I have been struggling for a week to cancel my contract that has reached its expiration date everyday i hold on for 45min and more i have been calling on daily basis 135...i have noticed that alot of people are struggling to cancel their contracts with MTN... I say no more MTN I WOULD RATHER PORT MY NUMBER.... CAN ANYONE FROM MTN HELP... I DON'T KNOW WHY I HAVE TO BEG TO GET HELP REALLY NOW