商务英文道歉信（通用3篇）
Dear Mr/Ms,
I was very concerned when I received your letter of yesterday complaining that the central heating system in your new house had not been completed by the date
promised.
On referring to our earlier correspondence,I find thatI had mistaken the date for completion. The fault is entirely mine and I deeply regret that it should have occurred.
I realize the inconvenience our oversight must be causing you and will do everything possible to avoid any further delay. I have already given instructions for the work to have priority and the engineers working on the job to be placed on overtime. These arrangements should see the installation completed by next weekend.
Yours faithfully,
尊敬的先生/小姐，
昨天收到你的来信，抱怨你新家的中央加热系统未按规定时间装好，对此我非常关心。参考较早的通信，我发现我搞错了完成日期。错误完全是我的，对此我非常抱歉。
认识到我们的疏忽给你造成的不便，我们将竭尽全力避免再耽搁。我已指示这项工作优先做并让工程人员加班。这样安排会于下周完成安装。
你诚挚的
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 Sir.
I am writing this letter to apologize to you for the mistake that we sent the shoes in wrong color. I have acknowledged that my fault has brought you great trouble and unconviniences. I hereby express my deep sorrow for this matter and we are going to do our best to make it up to you. I assure you that this mistake will not happen once again and would appreciate very much if you could give us a chance to show our sincerity on this matter.
Best regards