MTN failure in Port Edward/Banners Rest

For months now our connectivity with MTN in our area (Port Edward/Banners Rest) has become functionally useless much of the time. Numerous service request communications always have the same outcome. MTN claims that there is no fault on their side! This is an outright lie! They also refuse to send a technician down here to witness what all of us are experiencing and state that they only send out techies if the tower is physically damaged! No responses at all from ICASA or the Ombudsman!