Did you get the breeders name and number? I would call them and give them a piece of my mind!

The kind of a person who would buy a crossbreed for £1000 is the kind that has no sense and only care about what people think of them. I bet they tell everyone the dog cost £1000.

They aren't mongrels though. A mongrel is a dog who has atleast one parent who is a crossbreed.
A crossbreed is a dog who's parents are purebreeds.