Failure to cancel my account

Been trying to cancel my 3G since January as it was out of contract and was receiving poor service.<br> It is Impossible to get a hold of anyone in the call centre. Go into an MTN store &they cannot get through to the call centre. Endless time has been wasted.<br> <br> Months of not using a service & MTN continued billing &deducting the bank account even though a request to the bank was also in place to cancel the MTN D/O.<br> <br> In September finally managed to get a hold of someone who advised that cancellation on a company letterhead needs to be sent as the account was on my dad's name although I used the service.<br> <br> This was done! MTN Retentions response , Quote \ This email serves as acknowledgement of your request. Please retain your reference number found in the subject line for future tracking purposes."Although this was done"