Upgraded contract with out my concern

My contract was supposed to could have ended in September, I have been begging vodacom to cancel my contract and I haven't been receiving any help they upgraded my contract without my concern when you call they give you empty promises that it's canceled whilst it's not... I am done trying to get vodacom to do right by its consumers I will change to a different service provider as I honestly don't have time to run around making calls that doesn't help me... I have never missed any payment for the past 3 years I have been with you& I am failing to understand why am I receiving such immature services