投诉信的开头和结尾

投诉信结尾常用句式和套话
I trust you will take my complains seriously and.. I will appreciate it very much if you could... I would be perfectly satisfied if you can kindly... I understand you will give immediate attention to this matter. I would be grateful if you could... I would appreciate it if you could...
投诉信开头常用句式和套话
I am writing to complain about/that... I am writing to make a complaint about... I am writing to express my concern/ dissatisfaction/disappointment about... I am writhing to advise you that I find... unsatisfactory.
投诉信结尾常用句式和套话 I would like to have this matter settled by the end of... Frankly speaking, I am not prepared to put up with the situation any more. I must have you fully understand that without a satisfying solution, I will reserve my right to take legal action.
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投诉信开头常用句式和套话
I feel bad/sorry to trouble you but I am afraid I have to make a complaint about... I wish to draw your attention to the problem /fault...that I bought... I am most reluctant to complain, but... It is with great reluctance that I must inform you that...