MTN

Good Day,<br> <br> I had a contract with MTN which expired on the 26th Dec 2015. In November i queried this contract to find out exactly when i should cancel - on the expired date or before and the call centre agent advised me to call back on the day which i did. On the day that the contract expired i called again and cancelled, the call centre agent advised me that i will not be billed anymore going forward as this has now officially been cancelled. Now when i check in Jan 2016 i have noticed that i am stilling being billed for a contract that i no longer have. I have queried this with them and the call centre agent advised me that they have billed me for 20Nov2015 to 20Dec2015 but i cannot understand why because this money was debited already on the 20Dec2015. I need my money back, I'm not prepared to paid for a contract that i no longer use.