Even if your company is really affected by a "crisis" there is still no justification if you won't get your salary till december.
Better report the matter to the authorities, like Ministry of Labor, before the problem gets really worst and out of control.
There are several companies here in Qatar which are very much fair and square to their employees, so look for them; you don't deserve a that kind of unfair treatment if ever they are really pushing through with that scenario.
The best way is to talk to your boss seriously about the matter.