Russian Bots

I’m just getting slammed by Russian Bots. I have the same message being posted 100’s of times. Isn’t there some way to contextualize a block for people making posts? Most of these are just dumb bots, so having specific sentences that are added manually would be helpful.
Right now though, what do I do? This is taking up way too much of my time. My renewal is up next week, but paying for another few years doesn’t make sense at this point.