Tax refund status says says "your information doesn't match our records". Filed return via mail on 29th Jan and haven't yet received any return or notices from the IRS.

@aabhisek100  wrote:   "Tax refund status says says "your information doesn't match our records". Filed return via mail on 29th Jan and haven't yet received any return or notices from the IRS. I filed as a resident alien and mailed my return 2 months ago. "

When using the IRS "Where's My Refund" tool, be sure you are using the correct SSN (or ITIN) that's shown on your tax return, the correct tax year,  the correct filing status, and the amount of your Federal refund.   Be sure you are using only the Federal refund amount and not including any state refund (if applicable).   Use the Federal refund amount shown on your Form 1040, Line 35a.

IRS Where's My Refund?

https://www.irs.gov/wheres-my-refund

If the WMR tool still can't find it, we can tell you how to contact the IRS.   The way to phone them depends on whether you are in the USA or if you are in your foreign country.  If you are currently outside the USA, we can tell you how to contact the IRS International Taxpayer Service Call Center.