Just contact the trustee and the attorneys that handled the foreclosure and submit to them the short sale approval letter, the HUD-1 of your settlement, this is becoming a common mistake from the short sale department and the attorneys or legal department.
In the short sale process are many parties who have conflicting goals that allow them to pursue what is most financially beneficial to them, especially if a 'Mortgage Servicing' company is involved.
It may be simply a clerical error on the part of the bank or a revenue enhancement maneuver by the servicing company.
Your option is to consult your attorney or the title company whichever one you used. And as previously stated, when you are moved in, keep everyone else OUT!
It would think this information would be beneficial to all readers if the culprits were identified.
Best of luck,
I would first go to the attorney that managed your settlement. They would have obtained releases for all liens -- including the banks. See if they have a contact with the bank to clear this up. In the mean time, I would change the locks again. If the bank sends anyone else back to your home, call the police.
The bank would much rather have your money from the short sale versus the foreclosure, but hopefully things can get worked out.