Poor signal, dropped calls, stuck without network

MTN skylite data is unreliable and unstable Stuck in the following areas without signal/dropped calls/not receiving urgent work calls and unable to access my home/call for help/check google maps to get out of the area: Waterkloof Ridge - Pretoria Verlorenkloof Kruger - Phabeni Gate Eldoraigne- Centurion Pretoria Rosslyn - Pretoria

We are reliant on this technology in South Africa and the lack of signal has impacted negatively.