Impossible to cancel my contract

I have been into the store to cancel, called on 3 separate occasions to cancel my contract, and it has been impossible. Today I called and logged 4 reference numbers spending in excess of 3 hours trying to cancel my contract. Finally I got through to an agent that and she would email retentions / cancellations on my behalf to request the cancellation. I was not cc'd into the email but rather given a ref number for the call. Hopefully the contract is now finally cancelled, however I do not hold much hope that this is the case. I will see in one months time. I have been a client with MTN since 2010 and my average monthly invoice for 2 phone contracts is ion excess of R4000 per month. (that amounts to approx R336,000.00 over the term) Based on their customer service I will never open another MTN contract as even if you spend decent money with them, one is still treated very poorly.