No way to get hold of customer support

Worst customer support ever. Only offer a WhatsApp number and don't have a formal ticketing system where customers can log and track issues. Our internet has been down 2 days this week and we have had no response on WhatsApp from their support. I work remotely and this is crippling my ability to do my job as we have outages regularly during the week. To cancel their service you get directed to the same WhatsApp number. How on earth do you get hold of a human being at this company?