Telkom *********** customers

I called Telkom in January requesting a paid letter as my account appears open on my credit report, only to be told that I owe 3 cents and should pay R1 in order for my account to be closed. How am I expected to pay 97 cents more when 3 cents seems to be a material amount surely it costs more than 3 cents to keep this account open or even collect on this account. I requested that the 3 cents be deducted from my account in January has not happened and I refuse to pay more than I owe. This seems like a rounding error that could be easily written off in order to close the account. it does not make financial sense to request customers to pay such an insignificant amount. I would like to state that I have no problem in paying the 3 cents as long as the deduction will be that 3 cents to my knowledge it would cost Telkom more to deduct the 3 cents as opposed to just closing the account. I need this off my credit report and look forward to getting a response accompanied with proper reasoning.