Roaming fiasco

A summary of the events over the last 2 months: Voice, data and sms roaming activated 09/01 - great! Voice and data roaming deactivated 29/01 with sms roaming to still stay active - done. Still receiving calls from South Africa while being out of the country with voice roaming supposedly deactivated. MTN confirms all 3 roaming services are still active 26/02. Same scenario again: requested that only sms roaming to stay active. Apparently this was escalated by L. Zondi to C. Naidoo who will be in contact with me soon. As of 10/03: I have no roaming services available.

How difficult can this be?! How can the roaming settings be changed again without my knowledge / fail to change them as requested on the 29th of Jan originally? (Reference no *** / *** / *** / #*** / REQ***)