Review for White Oak Casino Review For Diamond Mountain Casino and Hotel Google User Nov 5 '17 at 1:14 Called for a reservation. No one answered phone. Got a message that said leave name and number and guaranteed a call back in 20 min. 30 min later no call. Second phone call and still no answer, same message. 30 min later still no call. Front desk needs a lot of training. If not going to do it don't guarantee it. View full site to comment or like