Hello, I filed and was due a refund but have not yet received it; just got letter from IRS that I actually owe them $1558.80 no later than 26 June 17.
IRS found a miscalculation on your return and changed it. If the letter doesn't explain this, you may call the IRS for more information. You may dispute the change, in writing, if you can show the IRS is in error.