Prevents you from cancelling and forces you to keep paying for service

I've been trying to cancel this service as I'm moving. I sent an email 26/05/2025 with an automailer return stating that a consultant will call me in 5-10 business days. I'm still waiting. I haven't been able to get through on any of the lines provided and the WhatsApp number is unavailable. It directs you to yet another line that's not answered. Their website is also not available. So they prevent you from cancelling the line and you have to keep paying?! How am I supposed to cancel if all avenues are blocked??