Deactivating my cellphone number

I cancelled my contract at the end of August and advised the consultant I want to change to prepaid with my number. However on the 14th of September my line was deactivated. I went into Mtn Maponya and was told it will take 7 working days. Ref ***. 7 days later my line is still not activated and my case is pending. Ref ***, I dont have an alternative number other than my work number. I want my number working or I will keep writing posts till it is!!!