They treat you like this during the purchase? Do you expect their behavior to get better when you own it and go in for service? They have already basically told you that they have no empathy for you, also blaming you for the situation. What do you think will happen with a warranty repair or a repair that may be a judgement call for them to decide? They will screw you at every turn. And you will need to call in the Regional PoA Manager to settle every single issue.

Walk away if you can. Them disclosing the lease bit - after you signed the contract, financed, and handed over the check? Super shady.