Account closed yet still getting billed for it

At the beginning of February 2015 I cancelled the Telkom contract as it came to an end account number ***<br> <br> The call center agent who helped me stated that I've cancelled it late and I will be billed for March 2015 and that it would be the last payment during March 2015 reference ***A to be precise I phoned 12.02.2015<br> <br> Yet April 2015 I was billed an amount of R300.76 and it was debited from my account, now we are in May 2015 and yet I've received another account for the account that I've closed and cancelled in February 2015 for an amount of R371.01<br> <br> Why am I getting billed for something that I've cancelled and was supposed to be finalised in March 2015?<br> <br> I will most definitely consult the Consumer Commission with regards to the matter as this is unfair and most certainly *******.<br> <br> I want the R300.76 back and you will stop the instruction to debit my account for the other R371.01