VODACOM POOR COVERAGE & SERVICE

I cannot make or receive calls. It sounds like a bad signal, no matter where I am. I've gone to Vodacom in East Rand Mall where the technical assistant made some system adjustment, I've done a SIM swap, I've changed my device, I've logged a call with Vodacom (which was "resolved"), and logged another call on 23 August 2021. I am now informed by the chat agent that I might receive resolution by 12 October 2021. The agent is apparently not able to explain the nature of the problem so that I may understand why it would take a month and a half to resolve. The system states "trial escalation". I cannot carry on like this! What is the purpose of having a cell phone if I cannot make or receive phone call