Dear Sir or Madam 
The reason why I am 
adressing
 you is that I am going to tell Correct your spelling
addressing
about
 some reasons Correct pronoun usage
you about
as well as
 I cannot attend your course called " Avtoshkola " in the light of who will go out from Linking Words
this
 town. 
Linking Words
Firstly
, I am Tom Smith and I Linking Words
have 
joined Unnecessary verb
apply
to 
Change preposition
apply
you
 course two weeks ago and I am going out today. So, I do not attend Correct pronoun usage
your
to 
your  course.
I am going to explain my situation. As I said above, I am leaving today. Change preposition
apply
One
 the hand, my parents Correct your spelling
On
calling
 for my brother's wedding. Wrong verb form
called
On the other hand
, my sister is going to go out from her homeland.
I am going to tell Linking Words
what
 I Correct pronoun usage
you what
wanted
 who Wrong verb form
want
have
 Correct subject-verb agreement
has
desire
, you give back my money.If you do not cash Add an article
the desire
a desire
bavk
 that money, I will make a complaint to Correct your spelling
back
police
.
I look forward to your reply.
Yours faithfully, 
Tom Smith.Correct article usage
the police