Worst support of any ISP

My fiber is now down for a week. The only way to contact them is through the stupid Whatsapp chat. I've been on this for hours now. Each new agent just apologises for the "inconvenience" and then re-escalates the issue to the technical team. Then the chat ends and I have to start all over again with a new agent. No responsibility for any of them. No follow ups with the same agent. Each agent starts with the same laim introduction that they understand my frustration and will escalate the fault. No phone call option. I still cannot believe this is the only support channel they have. I also still have no clue when they will repair my fiber.