It shows 24/7 open but not for any human being agent, the virtual agent screw up the confirm booking date, received wrong itinerary and it won't let you cancel even it got cancel option, just to trick you.
Hello Neville, I'm sorry to hear your booking experience was less than ideal. Would you provide your confirmation number and I'll have someone follow up with you?
Hello Neville, I'm sorry to hear your booking experience was less than ideal. Would you provide your confirmation number and I'll have someone follow up with you?
Customer Service at Vegas.com