A letter of complaint

The Director
English for Today Centre
731 Van Xuan Street
Ha Noi - Viet Nam
25th October, 2020
Dear Sir,
I am writing to complain about the poor quality of the service at your centre. Everything seems to be worse than what you say in the advertisement.
First, You say all the teachers at the centre are only the native, but in fact there are only some of them, and to make the matter more worse, a lot of them are professional at all.
Second, most of the classes are more than 20 students. And in the advertisement, you say books and tape cassettes are free, but we had to pay for them. And the thing that annoys us so much is most of the rooms are not air-conditioned.
Finally, the class time is not the same as that in the advertisement: classes tin late and finish early!
To resolve the problem, I require you to give me the refund. Enclosed is a copy of the receipt
I look forward to hearing from you and to getting a quick resolution of problem. Please contact me at the above address or by phone at 0327030375
Tran Duc Huy