I always take it to heart, i take it a lot better if have done something wrong.But i always want to cry if it was someone elses mistake,whats more i have had the WORST service before and i have NEVER EVER complained.But i seem to deal with people who have a tiny tiny little complaint who take up 2- 3 calls, 15- 25 mins of my time.All over something being two days later to arive then the supplier told me or something very very minor.And when they are mean to you.Not just telling you they are unhappy with the service but personally berating you,not the shop/company)If you OWNED the place where you work would you SOUP NAZI a customer? Like kick them out refuse to serve them, I would every so often.