Title says it all. What would you do or what can I do?

So I bought bilstein pss9's from a guy(late 30's) who said they were on his car for 5k miles and were in great condition. I get them, and notice they arent in good condition at all. I think well I will send them to bilstein to get refinished. I look today and see there are no rear springs. So if I had to rate these coilovers out of 10 for a used set, I'd give the casings a 3, the springs an 8, and the perches a 9.

I have a feeling this guy isnt going to be much help, can I file a paypal dispute with him? Will that do anything? I'm out almost a grand so help is appreciated.