Bad non-responsive bot

The most useless internet service provider I've ever had to deal with. They are quick in pausing internet service but very slow in attending to WhatsApp messages to assist with an invoice and a payment link. They have only 3 employees who joins the WhatsApp chat only after 5 days. Their WhatsApp robot doesn't understand anything, the most useless robot I've ever had to deal with. They have no phone number you can call them on, no matter how urgent your internet connection is, you need to wait for at least 10 business days until your services are restored. Fly.cool should use acm different robot, hire more employees and have a phone number to call on. Now I cannot work because I have to beg for my invoice every month that I need to submit to my workplace so I can pay for my ISP, I will only resume work when they respond to my WhatsApp messages after 10 business days. Why do I have to beg for an invoice to be sent? Can't this be sent to everyone every month? I'm done with this service provider, considering a better one.