5 and 6: "You have to . . ." and "We are doing our best".
Tying in last place with a percent of the vote each were “You have to . . .” and “We’re doing our best.”
People do not to be ordered around. Instead of telling a customer they "have to" do something why not substitute the word “need” instead of “have” as it is a much softer word. People appreciate helpful tips.
If a customer is complaining and you tell them you are doing your best you have a problem.
Because they are complaining about what you are doing, so if you cannot do better there is no point in their continued business. Instead of telling a customer you are doing your best why not let them know you appreciate their input. Thank a customer for a complaint letting them know that they are trying to improve their performance all the time.