Retirement tax questions

I got the check before April 15th.   Let's say the 401k excess amount was $10000.  The check I got was $7000 (30% withheld).     If I enter $10000 into TurboTax (for the current year), my tax goes up the extra $3000.   

 

Doesn't this mean I am double-taxed ?    They say they will send 1099-R next year, and suggested to contact TurboTax to find where to enter the withheld amount (or rate) for the excess $10000.     

 

Where do I enter the withheld amount ($3000) or the rate (30%) in TurboTax?