What if filed the form 1040EZ instead 1040NR-EZ. How I can amend the forms and return solve the issue if deadline for filing is already passed. Anyway I am getting the return in both the forms. With one I already filed I was getting more.

You need to amend the return by submitting Form 1040X with Forms 1040NR-EZ and 8843.

Email me if you want professional help filing this amendment.

Thanks, definitely I will contact you when I need professional help. But, how I can get these forms. Is it a lengthy process, or these kind of mistakes happen frequently by people?

Also, since the deadline was April 15, to fill these amendment forms should I contact IRS first or just fill the forms and send it. What are your service charges, if I need your help.

Such amendments are rather common, because it is a common mistake; I do about 20 a year.

Submission after the 15 April 2013 deadline will cause no significant problems.