Continue to be billed for 5 months after services CANCELLED

I phoned the Telkom call center on 20 March to cancel all of my internet and data services. ref# ********** 85SA. I was told that the cancellation would be effective by midnight the following day. I continue to be billed. Have followed up 3 times over the past 5 months and each time was told that the reference number proves that the cancellation was requested and that they will follow up with cancellations department to find out why it wasn't cancelled. I was also advised that a refund will be calculated and someone would contact me to discuss this. This never happened... I followed up again and NOW I am being told that: A. Cancellations cannot be done over the phone B. I must cancel my services on the website and wait 30 days C. Only then can I log a dispute that it should have been cancelled in March

I have requested a copy of the voice call from 20 March and been told that this might not be possible! I have a reference number! I do NOT work for Telkom! When I phone and request a cancellation and am told that it will be processed by midnight the next day - I believe them! Not once over the past 5 months has ANYONE told me that the cancellation was not requested! Not processed - yes! but It was requested!!!

The supervisor that I spoke to has assured me that she will investigate this and be in touch by the end of next week.

I refuse to pay for a mistake made by the employees of Telkom!