Ongoing query from March 2015

I migrated from 750 to top-up 500. In march 2015 I never received my airtime though I was billed for it. I also had to settle my handset before I could migrate but am still being charged for it . This month I didn't receive my recurring data. Five phone calls later I said all I want is to to be credited- I had to buy my own data. None of the credits have been passed, Nobody can help me and I have asked for a supervisor or manager to contact me at least 5 times - NOTHING. MTN has shocking service and treat their customers with disdain and bad attitude. My last ref no is ***. the consultant blamed it on the strike. So have they been on strike since November 2014?? Now that I refuse to settle my account unless this is sorted out, they threaten to suspend me??? I am not in the wrong here... I must have placed at least three to four calls to the call centre monthly since March. Still Zero result and no managers calling me. I can't believe they are still in business!! Disgusting!!