Webafrica has non existent telephonic customer service

I have been trying to cancel my service since 2nd June 2022 and yet again been billed !! It is impossible to speak to a person as you get directed to the BOT. I have held on for nearly 2 hours waiting for the BOT to transfer me to someone who can help and when you call the sales department after holding on for over 10 minutes they cut the call. any advice on how to escalate this to an actual person !