投诉信模板1：
Dear Manager,
Last week I bought ________ at your store and when I got it home it did not work at all. When I tried to return it to the store, I was told that I could not get refunded.
The sign in your store says that money is returned within 7 days of purchase if any problem exists, and I did that within the said time. Thus I insist that I should have my money back by return the ________ to you store。If I do not receive any satisfying response, I will further complain to the Consumer Protection Association.
Yours,
Li Ming
投诉信模板2：
To Whom It May Concern，
I am writing to complain about the poor service of your ________I received when________.
The reasons for my dissatisfaction lie upon three points as follows: 1) ________ ; 2) ________; 3) ________ . Under these circumstances, I find it difficult to ________ .
I am sure that you are able to thoroughly understand my discontent, which you are bound to replace with a satisfactory solution. I would be grateful if you could ________as soon as possible.
Yours sincerely,
Li Ming
