Thanks a lot for lots of comments. In fact, this is very important for any society, i.e. check and balance. It shows that people are not dead yet by their souls.

jackmohan2007:

Till now I liked Doha Clinic system, at least you know that how much time left for your turn but what if you waiting for your turn and someone else come and take your turn just for few additional riyals. Then it means the people that cannot afford higher fee, never see the doc because it is Qatar dude.... Qatari will always take ur turn by paying higher fee. This practice couldn't be appreciable..... otherwise there will be a disaster in the society...