No internet connection, no help

Hi! My internet connection is not working since around 11:30 pm yesterday. There was no internet light on the router and the info light was blinking. tried switching off and on the router, it didnt help.
I've rebooted the router, tried connecting, but it did not help. I cannot go through the connection assistant page.
I tried contacting support via hotline - No one spoke English. I tried reaching via support chat, translating my messages to German with Google. But 7 times I tried to contact, i was always forwarded to “my colleague” and after that dropped off the chat. I’m very much disappointed with the customer experience, and simply want my problem to be solved. Who on earth should I contact to get my issue solved??!!