There is no doubt about this your company has to give your final settlement. As per the labor law if you have a valid work permit with our company they have to give 21days of basic salary for one year. So you were suppose to get 84 days of your basic salary for 4 years. Plus Air ticket, if you have any balance leave days that has to be paid for those days.

If suppose 4000 was your basic salary you have to get 133.33*84 = 11200QR.