Dear Sir or Madam,
Thank you for letter of 5 May 20XX.
I must apologies for the delay in replying to your letter of 15 April. Unfortunately some members of our staff have recently been off sick. This, at a time when several of our employees take their annual leave, has resulted in unavoidable delays in replying to letters.
I enclose the price list of our company as requested and look forward to hearing from you.
Your sincerely
Dear Mr. Harrison,
Thank you for your telephone call of 18 May 20XX.
I am extremely sorry for the delay in sending the sample shirt to you. It was late because David Murray, our Production Manager, has been sick for three weeks. The sample, is now on its way and you should get the sample within three days.
I apologies again for the delay and I hope the sample will meet with your satisfaction.
Your sincerely
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.