Since you got a canned response apology, then we know that these suspensions are indeed mistakes. Probably you are flagging their automated suspension/ban software somehow with all the gold movement, but I don't see how, as the movement is on the same account. Maybe their software looks at how many people a person has given gold to in the last 24 hours, and they flagged the RL of your GDKP as a gold seller or something. Also there's no way TO know, as blizzard will not reveal that informaion. My advice would be call billing and talk to them, explaining that it is pretty ridiculous to keep having this mistake occur, and ask if there is any way to avoid it in the future. Chances are you are simply sol though, and they will be unable to give you any information and just tell you to send the email like they always do.