They connected remotely to our house (not a clue how they do that,) but we could see on the laptop that the modem is ok, it's the dsl line. They seem to think it's coming from inside the house. I've not had this issue before so this is a new one for me.
It isn't so bad, just that I can't use other devices and I'm using cellular data (I do not have an unlimited plan so I've got to be careful.)
