@king06
If your return has been transmitted by a tax professional and accepted by the IRS, you cannot file again. You have to wait till the processing is finished ( See WMR at IRS.gov ). Thereafter and if ,and only if , there is appreciable tax liability/refund difference then you will need to file an amended return.
NB-- Personally , my red flags go up when a tax preparer tells me that he/she can get me a higher refund, esp. without showing me what was wrong in the original filing. You can check out any and all Tax Professionals at IRS.Gov
RPO Preparer Directory
You can also check the credentials of registered/approved tax preparer for your state at local dept. of Revenue or similar
