Gateway Financial Telephone harassment Saginaw Michigan

I bought car for wfe on 12-14-17 and returned on 12-30-17. I told auto dealer at preferred automotives of wife's dislike. Shhannen , lead dealer at 859-269-4141. Advised me that he did not wife to be unhappy. I advised him that I want to cancel everything and to forget the thousand deposit. He said that he would contact gateway financial and resolve the matter. It did not happen as such. I received threatening calls that they would take me to court and ruin my credit. I told them that the dealer has the automobile. They said it will go to auction and I would have to pay off the loan.