This keeps happening.
There are a couple of Usenet Service Providers (USPs?) that I can recommend. The first is. The second is . Newsguy recently raised their rates. I dropped them and switched over to Usenetmonster . Newsguy kept cooing me to come back and finally offered me a pretty affordable deal. So I did go back to them.
See what you can negotiate with them if you want to continue to use Usenet.