Incorrect Billing and Disconnected Services

Shame on you for such bad services. Mtn disconnected my all my mobile services so I can't make any call, send any texts or even utilize my data. When I try to contact the service centre they state that its currently unavailable and requested that I send them an email. So I went onto their website to login to my contract statement and see if all was in order. To my surprise mtn claims that I have an amount overdue by 30 days and claims that I owe them over a thousand rand. This is unacceptable as I have been a loyal customer and have never missed payment. I have sent them an email and I got an automated email stating they acknowledge my complaint and will look into it. In the meantime my smart phone is useless I can not utilise it for anything. If this is mtn's strategy to keep their customers hostage by preventing them from migrating to the CellC contract buyout then shame on you!! I'm tired of your bad services I've let you get away with your fluctuating bills but now you have taken it too far. I want nothing to do with MTN. They must sort this out and let me go!!