York Chevrolet Buick GMC

So I came in to look at a car told it should fit my price points etc , it did not so instead it was a Buick encore i was showed next. Wasn't too thrilled about it after being shown other cars, but the sales man said they could get my old ring out of my car I saw fall down in the counsel. they were so sweet. After trading cars I had been messaging the dealer for 3 days (March 5th-March8th)back and fourth about the ring, said they had tried once, and they were having another guy try. I messaged him March 12th asking of anyword since no one ever got back to me in the previous days. He said oh I think they're getting into it today ill double check. then I got a text back 3 days after that (March 15th) that they did it finally and couldn't find it. That i personally saw fall down there, and i called because I HAVE to have that ring back its in a contract, which was expressed to the salesman during the purchase. I was speaking to Rodney about what can we do, can i return the car and get mine back since they can't get it out, do they honor buyers remorse or offer a return policy 30 days etc as I know some do. He got upset, very rude, and short quickly. HE said i set your car to the side 3 days already, I'm not wasting more time and money on this. I do not have the time. You can not return it, it is already a done deal. I need to have ur car ready to sell. No we do not honor buyers remorse either. There is no returning your new car. He was very rude and short tempered.