Ridiculous wait for cancelation!!

I cannot understand how long it could possibly take for a contract to be canceled. I've been trying to cancel my second contract since the beginning of the month and none of the agents are able to assist. It's either they have system restrictions or their system is down. I've been on the line for 45min at a time since the beginning of the month and currently still holding for 39min for someone to assist me. This is absolutely ridiculous. When it comes time to enter into a contract with MTN then all the systems will be working but when it comes to cancellation then it's a problem. I still have an active contract which I've just upgraded but due to my phone being ******, I want to cancel the second one. Can someone please help me!!??