MTN

Contract value is R140 and i have had a bill of R40 000 since i did a upgrade in May. They have admitted this is a technical fault of theirs . Been calling them everyday for 31 days, nobody calls back as promised. Cellphone has been blocked and havent had use of it. They deducted a ridiculous amount from my account last night - and i still dont have use of my phone. I have tried desperately to get assistance from MTN via phone and email and have had ZERO positive response. Seeking advice from anyone out there thats experienced the same problems.