I'm so, so sorry that this happened to you. I am sure it was very upsetting. I hope you can find a puppy really soon.
I agree what everyone else has said. They have no manners and could not even offer a simple thank you?? Unbelieveable.
As for them entering your home....that is NOT legal in any way and I would really press the police on this issue. That is SO wrong.

I cannot believe anyone would think that was o.k.
Hang in there and keep us posted.