Being ****** by Cell C

I ported a Cell C number ***) to Telkom approximately 24 months ago. The porting and contract cacellation with Cell C was done telephonically by the Telkom shop agent at Canal Walk Cape Town who received confirmation from his counter part at Cell C that the contract was cancelled. This should however not be regarded as a contract as it was a prepaid service with no other agreements in place. Since the cancellation my account was still being debited with an amount of R49 per month. Today I querried this and the supposed contract was cancelled immediately and the debit order stopped, however, I was informed that I will not be credited with the monies deducted monthly as the prepaid/contract was never cancelled. I indicated that I had no access to Cell C during this period thus I believe that I should be credited but I was informed that this would not happen. I am a 70 year old pensioner and every cent counts thus I humbly request Hello Peter to investigate this case and provide feedback.