Dealer claims vehicle not on floor and sold

Agreed on a amount to purchase a vehicle with one of their sales executive. Finance processed and approved. Sales executive comes back and advises vehicle was listed at incorrect price after all approvals confirmed. Requested to speak to the sales manager, advises vehicle is not on their floor. (How do you process a finance application for vehicle allegedly not in your possession?) Emails sent with all proof of listed pricing before finance application - no response Sales managers returns call after two days - states the vehicle I was approved for is now sold, however the very same listing with the same website URL exists for the vehicle with the changed sale price Requested a call from the dealer principal - no response to date