Metro Fiber worst internet service provider

Its been 2 months since I joined the service with MF. They have not created any account on customer portal and not sending me the invoice and just disconnected the service on 26 of each month.

When I follow up for the invoice, then only they send it and I have to sit for 3-4 days without any service.

This is the 2nd time in the last time that the same issue is happening. I have tried to call there contact number *** and was on hold for more then 90mins, no one is responding, tried whatsapp, Facebook all the channels but no response at all.

Not sure what else I can do to reach them and keep my internet service uninterrupted.