By screwing their customers over.. They told someone who had some issues with his Joker figure to buy replacement parts on ebay with his own money. They recently told me they wouldn't help me with my broken minigun (from T-800 BD) because it would cost them money to fix it and ship it...
So they wanted me to pay for it! Luckily the store I bought it from talked to them and I can now send it back but I'm assuming they won't take responsibility and pay for the return cost... Like I said, if you want change. Post it on their facebook page and let it be known to everyone just how bad they are with QC.
I was lucky once that I paid via paypal on their website and received a partial refund because EB didn't answer for weeks to the paypal case about damaged accessories.