check this sentences

[rayz26]

hi, please check and correct this sentences if there are any mistakes..

i) so bad because i don't received the letter

ii) so bad because my dad received the letter. If i had received the letter,
then for sure i don't let them know about the job.

[jazbrat]

i) so bad because i don't received the letter

should be

Unfortunate because I didn't receive the letter.


ii) so bad because my dad received the letter. If i had received the letter, then for sure i don't let them know about the job.

should be

Unfortunate, because my Dad received the letter. Had I received it, then I certainly wouldn't have let them know about the job.