Return and Amendment

When I completed my State return, I ended up owing more than $2000.  I arranged for it to come out of my bank account on April 15.  A few days later I questioned myself why I had to pay, so I rechecked my return and found that when I scanned my pay documents, TurboTax didn't include my state withholding, and I had neglected to check it for accuracy.  I filed an amended return and am actually due to get about $2000 back.   

On April 15, the state still took out my $2000.  How and when will that be returned and my refund be sent?