MTN is useless at Customer Service

I have complained multiple times to MTN and no one is taking me seriously.

I am fed up of this pathetic service. A lady by the name of Alice van der Merwer responded to me 2 weeks ago to say that someone will be fetching my device. It's two weeks later and no one has contacted me at all, and I have now been billed for this device which is unacceptable.

I want Rob Shuter to contact me about this matter, or someone who can actually assist me, not someone who makes false promises.