Legit in the end
Update: After investigating for 2 days I got sent a replacement for the codes, these did work, in the end it was an honest mistake so I'm changing my rating to 4 stars. Kudos to customer service, they were very professional at all times. Original experience: I bought two 50 USD PS Store codes, after 10 minutes they sent me four 25 USD codes. I tried using the first one but it was already used, tried the second one, and it was already used too, so I decided to not open the remaining two codes and contacted customer's service chat. I provided them proof of the codes not working (including my PS Store transaction history), then they asked me to open then other codes to confirm they didnt work as well, and as you can expect neither did. So they told me they were going to investigate the issue and that I should get an answer in 48-72 hours, will update once I hear from customer service.