Dear Sir or Madam,
I am writing to express my dissatisfaction with your dog that barks frequently 
hence
 as a student,I have difficulty keeping up with my studies.
I would like to let you know that the reason why I am disappointed is that I am unable to do my tasks.Nowadays,I am about to take a math exam and maybe you know,mathematics requires concentration but unfortunately,owing to your dog barking I can not  it do.
I would be extremely grateful f you could do anything to make it calm, particularly in the evening.I think that you can take it to the other side of the garden.It would reduce the voice significantly.
I think that Linking Words
this
 letter does not offend you.I only want to have some comfort in order to pass an exam with flying colours.I Linking Words
also
 would like to point out that Linking Words
this
 is the Linking Words
last
 chance for me.Linking Words
That is
 why I just was forced to explain my situation.I hope we will keep a good relationship.
I hope you will address Linking Words
this
 concern as soon as possible.
Yours faithfully 
Malik MalikiLinking Words