Telkom debits my account for 5 months

I moved house on the 1St December 2015 and therefor cancelled my telkom account on the 1St of November 2015 because I was told I needed to give 30 days notice. After cancelling my account telephonically I continued to have my account debited by telkom till March the 7th 2016. I have called telkom repeatedly only to be told by an agent the previous agent hadn't cancelled my account but rest assured it's cancelled this time. I received am sms on the 11Feb 2016 stating my adsl line was cancelled. Only to have them debit my account once again. So far they have debited my account 5 times for the amount of R750. Telkom are a bunch of ******* and I am in the right mind to report them for ***** and theft. I want my money back