its a part of every business , the messer .    restaurants get them  as do  shops ,pubs etc etc  . youv got to get rid as pleasantly as you can and grit your teeth ,not let em eat at you
  if a messer insults me now thats moved it onto a different level.    i get rid of them  but make a note in my diary for a few months later to  wreak havoc on them -  revenge is best served cold .  i usually only do it twice a year , this stops me getting bitter