Horrible experience ....very unprofessional we ve...

Horrible experience ....very unprofessional we ve been talking and working on this deal for the past month. And finally we agreed on the deal and have appointment setup to finalize.. ... Till the very last minute they telling me it doesnt work and you have to pay more to make it work ...i have all the history saved... and the sales person called put the blame on us saying we didn t provided enough information of the trade-in .. this is ridiculous... this is the second time i went to the dealership to do my trade in .. they have all the record... plus i have provided all the update and exact number before we start dealing ........ I dont understand how dealership can work like this? Is this a joke?! Did they just made up the price we agreed and make you go in and play bargain game again?