Hi Tim and welcome to the Forum!! Sorry to hear about your experience, but yep you got took.
The O/U you have is a Churchill in name only. It has no connection what so ever to the English Maker. Just a marketing ploy. I would bet that it's a Spanish gun, more than likely made by Felix Sarasqueta, but it could be another maker. You can tell by finding a makers mark on the inside of the action. Here is a list of makers marks:http://personales.jet.es/rafa/b_punzone ... _lisa.html
Hard to tell on a value without seeing the condition of the gun, but I guess would be if in excellent shape, about the $500 mark. Pics would be nice if possible.
These are not bad guns, just good work a day ones.
Sorry gain about how you got her.
Again, welcome to the fourm!
All the best!