In any case better dont sign. I have my acquaintance who worked for 3500/-, tried to get a change later, had to leave Qatar in a bitter manner.

If needed come to Qatar again and keep on trying. If you still dont get anything you can settle in this type of jobs, which I am sure are in plenty now. Dont settle on anything less than 10000/-. However the final decision is yours. Wish you all the best.