Called them to look at a tankless water heater that was leaking. An alarm went off in my head when a supervisor showed up with the tech, in a seperate truck. They said they could fix it but couldn't guarantee it saying my heater was cheap, it could lead to other problems, etc., etc. Said I'd be better off replacing it which would entail changing out the gas lines to a larger one, pulling permits, at a cost of 5k+. Got a 2nd opinion and fix from another company for $145.
Was glad to pay the $29 service fee to make them go away.