@Kesav if you are stating that you filed a paper return, that the IRS has cashed your check, but has not processed the return, just wait. THere is nothing else to do.
the fact that you paid what you beleive you owe is good enough for the time being.
That stated, there is probably an error in your return. The IRS announced on Monday that they had completed all processing for all return filed - whether electronically or via paper - where there were no errors through March.
Since you state you filed in March, that means there is probably an error. But there is nothing to do but wait for the IRS to resolve it and communicate with you.
