My federal refund has not been processed in 3 months , I checked their website it says still being processed , I also have defend thing from you why it is taking so long

So this IRS website tool says it is still being processed?
http://www.irs.gov/Refunds

Since your return has been processing so long, you can phone the IRS to see if you can learn anything about the delay.  I'll also leave info on how to contact the IRS Taxpayer Advocate Service if you don't get good info or results from the IRS.

IRS:  800-829-1040  hours 7 AM - 7 PM local time Mon-Fri

Listen to each menu before making the selection.
 
First choose your language. Press 1 for English.

• Then do not choose the first choice re: "Refund", or it will send you to an automated phone line.
• Instead, press 2 for "personal income tax".
• Then press 1 for "form, tax history, or payment".  
• Then press 3 "for all other questions."
• Then press 2 "for all other questions."  It should then transfer you to an agent, but there is likely to be a long wait.

I usually use a speakerphone so I can work on something else while waiting.

If you aren't able to get good info/results from the IRS, you could consider contacting the IRS Taxpayer Advocate Service for your area. 

At the following IRS website, find the USA map and click on your state, and it will give you the number of your IRS Taxpayer Advocate.

http://www.irs.gov/uac/Contact-a-Local-Taxpayer-Advocate


Also see this article for more info on how the Taxpayer Advocate Service works::
http://www.irs.gov/taxtopics/tc104.html

Hey , Thanks for helping,  I am out of states and wont be back for a while, is there an easy way to do it over email or so ?

No.  The IRS doesn't use email for this purpose, but email is not safe communication anyway.  They have to ID you by asking you for sensitive info, etc..

If you try to use the above info to phone from outside the country, you may or may not be able to phone an 800 number, and even if you can, it won't be free internationally, and you might be on-hold a while.

The IRS does have an International Taxpayer Service Call Center you could phone.  It is not a free number either.
<a rel="nofollow" target="_blank" href="https://www.irs.gov/uac/contact-my-local-office-internationally">https://www.irs.gov/uac/contact-my-local-office-internationally</a>

There's also a mailing address shown there for people outside the country, but if you are normally in the USA, I don't know if that is an address you should use or not.