I was given Farcry 4 a few years ago. I tried to install it last week and the key was used already. The game was in plastic wrapper still, I just opened it. Support said there was nothing they could do. Luckily I found the receipt and got the money back from MediaMarkt instead. Never buying boxed games again.
Had a similar experience with my steam copy of red alert 3 a couple of years back (before the GameSpy shutdown, so the servers were still up). Logged in after not having played for years, the online system kept reporting invalid CD Key, EA told me Steam had to issue a new key, Steam insisted that it was EA's fault, end result was I couldn't play my game online
When support staff is unhelpful, it's always a good idea to request to be forwarded to a higher tier of support staff. I was once stuck in a dead-end 10+ email thread with the basic support, when the upper tier support fixed the issue immediately.
