AIRTIME DISAPPEARS

I AM SO FRUSTRATED,MTN DECIDES TO WIPE MY AIRTIME OF R241.00 + 1.2G OF DATA OVER NIGHT.ON THE 24TH OF JUNE I SLEPT WITH THAT MUCH OF AIRTIME IN THE MORNING WHEN I TRIED TO CALL I HAD 0.00 BALANCE IN EVERYTHING.I CALLED THE CUSTOMER LINE & SPOKE TO A LADY(NAME KNOWN TO ME)SHE TOLD ME I JOINED SOME PROMO WORTH R149.00 EVERY MONTH TO GET 50% + ON ANY RECHARGE WHICH I LOAD WHICH IS HOGWASH COS I NEVER DID & NEVER JOINED ANY PROMO,IF I DID WHAT HAPPENED TO MY EXCESS R92.00 + 1.2G OF DATA? THE MATH DOESN'T ADD UP,WHY WOULD I BUY AIRTIME FOR R241.00+ ,JOIN A PROMO FOR R149.00 GET 50% ON AIRTIME I BUY (e.g if i buy R30.00 airtime i get R15.00 extra) & PAY R160.00 ON DATA I DNT NEED?.I WAS TOLD TO EXPECT A CALL WITHIN AN HOUR... 2HRS LATER I CALL BACK & SPEAK TO A GENTLEMAN(NAME KNOWN TO ME) HE TOLD ME ITS A GLITCH BECAUSE HE CANT SEE MY TRANSACTIONS AS OF 1915HRS THE PREVIOUS NIGHT AND I SHOULD WAIT 2-24HRS TO GET FEEDBACK.NOW I AM FORCED TO BUY DATA + AIRTIME BECAUSE MY PHONE IS FOR BUSINESS.THIS IS A PREPAID NOT A CONTRACT MIND YOU,<br> THE SO-CALLED CUSTOMER CHAMPIONS ARE PLAYING AROUND,THEY SHOULD JUST SIMPLY REVERSE MY AIRTIME AND DATA I DIDN'T GET ANYTHING FOR FREE I WORK FOR MY AIRTIME