The OP is insane to call a book a scam after 2 days for $500,000. They have to make sure that the correct person is being bad and that everything was fair. If it's $5,000 then it shouldn't take more than a few hours. $500,000 is different.
This is not the first time we are seeing something like this, where a player will just call book maker scam simply because of timing and the inability to wait when there is an issue with their account, just as mentioned by others, what ops could have done is to have some patience and wait since the support has asked him to do so instead of becoming impatient which will not change anything.
The only time the ops could have had some worries was if his account were blocked which is not the case right now.