Dealer tried to rip me off, can I do anything about it?

thats really not my problem though, my problem is Keeler telling me it needs fixing and is unsafe to drive NOW, NOT “oh these rear subframe mounts crack all the time on this, you might want to reinforce it soon”

no, they flat out told me, its cracked NOW, unsafe to drive NOW and will cost $6-8,000 to fix and do I want to go ahead and do it NOW