Misrepresenting an upgrade & then not reversing fully

I had a call from Summer Mobile on 20/11/2017 (at the beginning of the call I was advised call from MTN and only right at the end was it said Summer Mobile!) where I was offered an upgrade on my contract. All the way through the call I was advised "this call is recorded". A number of times during the call I asked & I was assured "the benefits you currently enjoy (airtime + SMS's + data) would not change at all. Come the "upgrade" being finalised, I had airtime - NO data NOR SMS's. This confirmed by MTN themselves. Please check the original sales call - you will hear how many times I asked & how many times I was assured - nothing would change, other than the amount to be paid ! I called the call centre on 28/11/2017 - spoke to Kate (very helpful lady) who I requested to arrange total reversal of all changes made - and restoring my original contract to exactly as it was. She undertook to get this done - and called me on 04/12 to advise "all the reversals have been done". Well, I have my airtime +- not suere about my SMS's - and NO data allocation !!! Please get this reversal done correctly - fully - everything back as soon as possible.