【1】
Dear Mr. Hunnicutt,
I am writing to apologize for the incorrect invoice you received from us. Owing to a breakdown in communications, we did not credit you with a 10% discount, as agreed.
We shall send you the correct invoice as soon as possible and make sure that such a mistake will not occur again. Please accept my apologies for any inconvenience we have caused.
Your sincerely,
Peter Gibson
Accounts Manager
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【2】
Dear,
I am writing this letter to express my apology that .
I feel terribly sorry about this. Once again, I am very sorry for any inconvenience caused.
I will be really appreciated if you can accept my apologies and understand my situation.
Yours Sincerely
【3】
Dear Ms Jeremy,
Thank you for your letter of 6 October. After supplying your restaurants for 5 years, I was extremely sorry to hear that the batch of bowls and forks which you received on 2 September was not of usual quality.
After careful investigation, we found that the cause of the problem was a faulty packing machine. It has now been repaired. I can promise you that this type of problem will not happen again.
According to the sales contract between us, we will, of course, replace your faulty delivery free of charge.
I would like to offer our apologies once again and thank you being an excellent customer.
Yours sincerely.