【正确答案】 March 17
Dear Sir,
I’m John Green from after-sale department, Leek Air conditioning Company. I’m writing to express my deep apology for the neglect of my job.
I received your letter yesterday, which said that your newly bought air conditioner was not fixed as it was scheduled. I am terribly sorry for that. All of this is due to the fact that I misread the time. And we promise to finish the installment next Monday. Meantime, I sincerely apologize to you for your inconvenience caused by my mistake again.
Sincerely yours,
John Green