Poor Network Coverage and Terrible Customer Management

All I want is to cancel my MTN contract. I have tried calling, emailing, and even Facebook - not a single person has responded. Why am I being hled hostage?

The primary reason that I am leaving MTN is because of the poor network coverage in Fourways. I have ZERO phone signal when the power goes out. Whereas my Vodacom signal is sginificantly better.

Please let me cancel my contract!