Today

Today, I got a call for an interview .

I reached for the Interview on time but everyone there was staring me as i was not in formals

I got to the interview on time, and everyone there was starting at me because I wasn't wearing formal clothing.

or:
"..I arrived at the interview on time"

.Interviewer also doesn't show any interest on me may be my appearance .

The interviewer didn't show any interest in me because of my appearance.

when i was about to go back to my home after the interview was over my car was breakdown in the middle of the road don't know what to do

While I was driving home after the interview, my car broke down in the middle of the road, and I didn't know what to do.

i tried too many times but i hasn't started then i call the mechanics he took my car. and i took an taxi to come home.

I tried to get it to start several times, but it didn't start so then I called a mechanic to fix my car, and then I called a taxi.

After reaching home i got a cal from mechanics that my car engine was break down . The whole day frustrated me .

After I got (or arrived) home, I got a call from the mechanic that my car engine broke down. I was frustrated for the rest of the day.

and when i receive a mail that i didn't selected i just feel very bad .

When I found out that I didn't get selected (or hired), I felt very bad.