Mtn is ******** me of R22 000 and won't help

I received a SMS that said I can upgrade. On the 19th of November I went online to do the upgrade. On the application page it stated the cost of the new contract and a amount of R400 that I still owe on the device, and that amount will be added to the next bill. After I completed the application it said a sales representative will contact me to finalise the order. In 1 month no one contacted me, but when I received my bill the contract went through and the R400 that was stated owed on the device is now R22 000.

I was not made aware that it will be that amount, I did not sign anything for that amount.

Now I can not get hold of any compotent person on any of the millions of 083 123.... Numbers all the "service professionals" are telling me to call or trying to put me through then just nothing and the call dies.

I can't even be helped in a MTN store. All they say is call 135... Useless

You want more than my monthly pay...

Pathetic service and signal.