You need to bite the bullet and call Verizon.
It’s been awhile since I was in the market, but ask about “message rate” service. It might not be on the website, or its buried because they want to sell you a more expensive bundle. I live in VA, but used to have this. Basically it was a plan where you paid a monthly rate and had X # of local calls included. Over the limit, there was like a 5cent per call charge or something. I figured that for me, if I made 3 calls or less per day, it was cheaper than going with the unlimited service. If you don’t make a lot of calls, something like this might be the best.
The DC Public Service Commission probably has info, or you can call and ask. http://www.dcpsc.org