Bad service by Telkom

I had a Telkom contract simcard however i called telkom to cancel the contract service for me and requested a paid up letter, i was informed that the sim is owing R87.15 which i have made immediate payment of soon as i discovered that it is in arreas. I have started making conversations with different consultants from 15 November 2021 and today is 26 November 2021 i have not received a letter, even though i informed the consultants that this is very urgent as there was a burial regarding this paid up letter request required by a bank i could not be assisted. Telkom service was very bad for me even though am using their service but they cant serve customers in a right way my contacts are ***