MTN Fix your Mess!!

Good Day I don't even want to give MTN any star they don't deserve a star. I regret ever having a contract with MTN. I cancelled my contract as well as the number with MTN last year December 2021, paid the fee and phoned in and spoke to someone in cancelations and was assured my account will be cancelled. I received an confirmation email from Retentions department from Andrea stating my number is cancelled 31.12.2021. I found out I have a bad credit record Tuesday because of MTN the number I cancelled has never been cancelled and now I "OWE" MTN money!! so this is affecting MY CREDIT RECORD, because MTN's workers can not do their job properly. I've been phoning since Tuesday and I am being transferred from Pillar to post. I spoke to someone in cancelations dept. she transferred me to someone in Retentions dept. she transferred me to someone in legal dept. the lady in legal dept. told me this is something Retentions needs to sort out she made a conference call we spoke to Thandi in Retentions dept. she said I must send her the email of cancelation she gave me her email address I spelled it back to her only for me to send the mail and get a postmaster saying the email is invalid. I've been phoning MTN whole morning today and guess what? my calls has been cut 5 time already this is besides holding on for how long. I need MTN to sort out their mess and clear my name. I send them mails to Retentions, MTN customer care as well as cancelations and I still have not received any replies. I think its time for me to get a lawyer to deal with this mess, this is their negligence, not mine.