REFUSING TO CANCEL CONTRACT

I have 3 phone contracts with Vodacom, I called in early January to cancel 2 phone contracts, Vodacom only cancelled the 1 and refuse to cancel the other contract, I called them over 5 times and all the consultants act like they are helping me and just end up hanging up on me while I am busy on hold.

Is this how Vodacom keeps their customers by refusing to cancel contracts, why do I need to pay for an extra month when I cancelled well in time? do you think I would cancel the contract if I had the money to pay for it? Vodacom is a bunch of ******, do not take out a contract with Vodacom others wise you will not be able to cancel.