MTN must learn to stick to the terms we agreed on.

I am highly disappointed in MTN as a group i purchased my laptop via a contract in one of their branches. The term ended of our contract, i received notification that my number will be prepared which i barley use the number. Today i received an email that they didnt receive a payment for the month of April of R650. I did not use the sim card my contract ended in December. When i call in the agent says my line is active, when i received notification that contract ended when i payed my outstanding amount and the instore agent confirmed my line isnt active anymore. I have heard about how difficult getting out of an MTN is however i never thought my turn will come. I called in only to be given a ticket number that they investigating i will get feedback after 24hours.BO***. I am really unhappy in how the business is ran. I only agreed to the term of the contract. My aunt and best friend are having the very same issues.