The ISP apparently has some "customer management" section on their web page. But how to log into that is a mystery to me, even after contacting their support department. Apparently I need to use my email address and password to log into it. I suppose they expect that all their customers use one of their email addresses.

I have no idea if they assigned me an email address when I signed up for service and if they did what the password would be.

They also have a support system on their site that allow you to, among other things, to check your billing. I can log into that with any email address and only needed to provide my account number with them to get access to the details.

Why do they have two different ways to log into their site each with access to different information? Don't know. Just know I can't waste any more time trying to get the information from them.