A letter to a local TV company, ЗНО, writing

Юля Годлевская Английский
   ВНО 2015, пример
   Dear Sir or Madam,
   I am writing to propose some ideas of how to improve the quality of TV programs. I consider if we don't concern about the quality of the programs, our society can change in the near future in not the best way.   
   On the one hand, I'm sure that TV programs on your channel have been improved since I started to watch it. There are a lot of educational, entertaining, scientific and other programs to see. Documentary films are a little boring, but we can learn something useful from them. 
   But on the other hand, the number of talk-shows and reality-shows frightens me. Violence on TV influences on the people, especially on children. One more thing I would like to mention is there is too much of advertising on your channel.
   I believe that most of TV programs have to remain educative and helpful.
   Sincerely yours,