Hi Stressed,
I don't know your financial situation, but why not call out a lock smith yourself, they can normally be there withinthe hour and the locks changed within ten minutes or so, I know this as I have done it myself, it cost around �70 but it was well worth it. You may be able to claim the money back from the council as you have a ref from the police and you feel that you are in danger.
I hope all works out well, phone friends and natter to try and take your mind of it.
Good luck