MTN very bad service false promises

after a month trying to unblock a device Z10 for ********** 334, and my report here oh hellopeter last week, I still am waiting despite a response i got from MTN:

"kindly note that an urgent escalation has been sent to our pre-paid division to assist with un-blacklisting of the device . Please do resend all the required documentation to the below mail address for prompt action. **********

the person above never responded to my emails. I have nowhere else to go because the branches and phone calls to customer service offer no solution. the 173supers@mtn that promised on 12 July that the device will be unblacklisted in 72 hours, also not responding to my emails anymore.

I am glad I am not MTN customer and wonder what my husband is doing with MTN. He must port to Telkom where we can even UNblacklist with a phone call!!!!