Be sure i checked that number before, i don't wanna have hundreds of ppl calling him, keeping him away from work if he tries to fix the engine   .

And yeah, sometimes you have to be an asshole. You have to say "NO STEP FURTHER" sometimes and defend your point of view in the first, even if it might piss off people. But you always have to be open for other arguments, discuss them, think your position over, move a bit when the opposite moves, too. In the end you have a solution were all keep up appearances.

Since i have a few thousand € in there, i can be your worst nightmare if you don't treat me well!