Exhausted by MTN

My number is ********** 539

I have been struggling to get MTN to reinstate my line for over a week. I made a full payment on the 19th of December 2018 at Rosebank mall, the consultant says she made an escalation for the legal department to unlock but till today nothing. I have been calling 135 and sittiling with numerous reference numbers but no luck. I need to use my phone ASAP but I'm unable to because someone is not doing what needs to be done.

So tired of this service provider inefficiency I wanna port out???