Telkom's Pathetic services

Good day, I have had the worst experience ever with Telkom in Hayfields Pietermaritzburg. I have taken out a data sim contract with Telkom on the 10/11/2021 and I returned the data sim back to Telkom within the 7 day period for cancellation on the 14/11/2021 in presence of my son. My phone is vodacom locked so I didn't insert any card into my device. We were assisted by Cindy who is the store Manager and was on duty that morning. She made me sign the cancellation and said they will attend to it. Noting I had just lost my husband during that time but Telkom made it very difficult for me. I only realized that they did not carry out there duties as they suppose to, when my bank account was debited from December 2021 to Current and every time it's a different amount. It's costing me fees and bank charges to be keep reversing the funds. I have been driving to the store where the managers are of no help at all. I even emailed the two Managers - Jamie and Marsha who have not responded to any of my emails. I received a call from Telkom ****roaches on Thursday the 21/07/2022 which is Blake & Associates stating I have been handed over by Telkom for the recovery of R2 352.00. I need someone to kindly assist me with this matter because Telkom is gone out of hand due to Staff negligence and staff being ***********. If this affects my credit profile and no one attends to this enquiry. I will be sueing Telkom for all the trouble they have caused me. I also have a case that I opened up with the National Consumer Commission - the case number is *** . My Details are Miss S Naidoo, Telkom ***.