Vodacom avoiding customers and makes it impossible to speak to human agent

Vodacom must be the worst ever. It is impossible to speak to any human being and the system will push you to their virtual assistant TOBI who eventually cuts you off and cannot help you. My contract number has disappeared after 20 years and when requested to enter your number it says number does not exist.

I have logged various queries through different emails without success as the response just comes through to call 082 135 or *** which is totally impossible.