

This is what I did, except I’m in the USA. I had to contact the FCC directly because my phone and internet provider just pretty much quit working. Turns out they were doing repairs in our area and just didn’t tell anyone to expect interruptions. If your ISP won’t take you seriously now, they will if you file an informal complaint with the FCC or other comparable agency.
Truth. Coworkers too. The good die young and assholes live forever.