Useful Vocabulary for Complaint Letters

Greeting receipant	Dear Sir/Dear Madam Dear Mr Last Name Dear Ms Last Name
Explainig reason	I am writing in order to complain about/I am writing to complain about
Introducing the complaint:	Firstly/In the first place First of all My first complaint is The first problem is The first thing I would like to draw your attention to is My first concern is
Introducing further complaints:	Secondly/In the second place Not only ...but also... Moreover In addition to this Supplementary to this (...something...) was also unacceptable
Demanding action:	I propose that you replace the item / I therefore suggest that I be given a full refund** I would be grateful if my money was refunded I would appreciate it if you could give me a full refund I would be thankful if you could give me a full refund
Endings	I look forward to hearing from you / I look forward to receiving a full refund I look forward to receiving a replacement I look forward to receiving your explanation

1. Would you include flattery? Why or why not? If you would do so, where would you include it?