I agree. I dont think he should have charged you extra if he did not do what he said he would. You wouldnt pay extra for leather interior and drive off with cloth. I wouldnt give her back, because she is young enough that you can work with her and help some of the issues she is having.
When i got Binx, he was two and would just bite at me and hang upside down in his cage, he has come a LONG LONG way in 3 years, but everyday is a new day.
Take your time, dont give up and dont get angry. There are a TON of good articles on this Forum that could be useful to you.
I would ask for some of my money back, however, if he refuses.. Since he is just working out of his home, it could turn into a civil issue and to continue on with it you would have to pay to take him to court, but i would at least ask him for some of your money back.
Binx's Mom.