Don't stress out guys. Tomorrow starts the weekend in Dubai, then there is the 1st of January Sunday which is another holiday. So before January 2, no GCs. I supppose.
And their working hours are from 9-3.30 , with the time difference they close more or less at 12. I guess, there is no possibility to get a call afternoon/evening.
Most probably early in the a.m, when your asleep.