Seller has had a small customer for ~10 years. Customer is an angry person to both employees and Seller. Customer is also <1$ of recurring company revenues. Customer additionally takes too much mindshare and time.

Seems like an ideal customer to fire, but, the customer has not been dropped because they are a local retired judge who seller fears cause problems for our service vehicles, service technicians, or otherwise. I'm not clear if this is possible for a retired local judge to actually do - I can't imagine this guy has friends who he could ask to harass me with, HOWEVER a) it's a big risk, and b) if he has friends I can't imagine they would be nice people either.

Has anyone gone through something like this? I think the strategy is to just reduce service so that I appear incompetent, but not malicious, until the customer churns.