How funny you mentioned this. I just called China this morning asking the same question. Because Visa wasn't readily available, at one point I was doing a Master Card. It didn't take, and it took several tries before I got anything to work. But by then, I wasn't sure which card had been used. I called and asked which card was it billed to. The non-native woman speaking to me in English said they weren't able to see the card numbers used, and therefore couldn't tell me. Still, I show that I have a registration, and she confirmed it on the phone. If this is happening across the board, and they aren't collecting the money, they could be in deep, deep trouble.