MTN CUSTOMER CARE SUCKS

Good Day, I Have Cancelled my contract on the 30th of November. MTN Said that i will be cancelled within 5 to 7 working days. I received an SMS stating contract will be cancelled on the 02/12/2021. Nothing happened. 3 December I called customer care stating do not cancel has their has not happened anything I will ten take the upgrade. They said I need to wait 5 to 7 working days for retrenchment department to close the migration. Since then I have called the 8th of December 9th 10th 12th 15th and 29th December, Also I have called on the 17th 19th and 20th January 2022. Still nothing they can close the migration and I cant upgrade. I have spoken to so many agents Promising me that they will resolve this up and until today nothing.