Debited for a cancelled contract

Ive contacted your cutomer care via email months ago to arrange for the cancelation of my MTN contract in which i clearly stated i do not wish to renew it, the expiry date for the contract has elapsed yet I'm still been debited! Ive resent two emails of which one had been escalted by your consultant who cannot spell out a proper email address and thus it had bounced, the second email had been escalated. To date I have not been contacted via email or telephonically to arrange for a refund on the money you have *******ly acquired from my account. My duties as a subcriber has been completed by informing you that i did not wish to renew my contract. You have till Thursday to ensure that the extra money debited from my acc over the pass few months is paid back in full and an apology for your patethic service issued.