Bad service from MTN

I've been a loyal customer for over 10 years or so. However this past few days I have released MTN doesn't care about their customers. Now I am phone less because the call center agent for taking wrong info. Now I am told I have to have 2 contracts because they can't cancel the one contract that I didn't even ask for. I call the call center now requiring to speak to a manager, am putting on hold for almost an hour. I am taking of taking MTN to legal wise as my rights have been violated. Then I am going to find another network that care their customers seriously... I DEMAND TO BE CALLED BY MTN TO SORT OUT THIS QUERY I HAVE WITH THEM AS THIS IS MY HARD EARNED MONEY AND IT CAN'T BE CORRECT MTN TO ROB ME LIKE THIS...