Billing for cancelled service

I cancelled my ADSL service from Telkom on the 1st of March 2015. I then paid what should have been the last payment for this service at the end of March. To my horror I received a bill at the end of April which still had the amount for the ADSL service on it. Upon phoning the Telkom Accounts dept I was told there was no cancellations reflecting on my account even after furnishing the reference numbers I had been given for the cancellation. This was supposedly then escalated to the credit dept. with another reference number and the promise that I would be contacted asap. So far I have heard nothing from them about this or any sign that they have any interest in resolving this matter.<br> <br> Reinette CrawCour