Vumatel robbing customers

I signed up for a wifi and everything was fine until August 2023. My wifi stopped working, I have been sending emails to the service provider they don't respond I only get the automated ticket number but no one will follow up. I have been sending whatsapp messages throughout this time but no one has attended to those messages I will only get a message to say there is a long queue someone will attend to me and never did. What makes me angry I even cancelled my contract with them via email because i was trying to get their attention but they keep on deducting my subscription every month but I don't have any connection. Worse of all they don't have a number that you can call.