Oddly enough, I've had nothing but good experiences with RA in the past. I buy a lot of closeout stuff from them, a handful have been incorrect parts over the years-- typically something labeled for my application but simply doesn't fit or is intended for my model vehicle but different engine, rear end, transmission, etc. Every time this has happened, I fill out the online form or call, and they've either refunded my money, and even a couple times, sent me a new (non-closeout) part that was correct at no charge, and always had me keep the old one.
One time I ordered some closeout splitfire spark plugs, and in transit 3 or 4 of the crush washers somehow escaped from the packaging (Fedex didn't help and crushed the outer carton all to [censored]). I called RA and explained the situation expecting a partial credit or new washers, but they sent a whole new set of plugs out and had me keep the old ones.
This experience is very unlike my other ones-- but blatant disregard for such a significant error in their catalog will have me shopping around a lot more for my parts purchases in an effort to avoid RA.