Number not migrated to Prepaid and Data still loaded on the Account

Despite receiving email from Social Media team and SMS confirming that my number will be Prepaid by midnight. My number is still on contract.

here is what happened. You loaded 10GB on my Account Raise an invoice of R508.50 Which is due on 31 January 2018

What is going on here???????????? I Need this contract cancelled. I WONT PAY THIS INVOICE for 31 January 2018

Dont tell me about Bill Run ETC Sort this mess