Hi nickchenyanhui,
Can you please let me know your sportsbet user name and I can check out what the go is for you. Put it here or inbox me.
Thanks,
Steve,
Sportsbet.io
He's already offering help to resolve this matter.
I hope the OP will communicate with him as soon as possible before everybody is giving their own point of views.
Better directly contact them and if he's not satisfied with the support he's getting, then, he can create a thread in the scam accusations board.