Pathetic service

I WAS DUE FOR AN UPGRADE SO I MADE AN ONLINE REQUEST TO HAVE MY CONTRACT MOVED TO A MONTH TO MONTH PACKAGE FROM NOVEMBER. MTN THEN HIT ME WITH R2800 BILL AT END OF OCTOBER CLAIMING EARLY MIGRATION FEES. I HAVE NOW ALSO LOST THE OPORTUNITY TO UPGRADE MY PHONE DUE TO THEIR MISTAKES AND THEY JUST DONT GET BACK TO ME. BAD BAD BAD SERVICE