Tell them that you are leaving.
If you exiting Qatar within 30 days from your date of Entry you don't need an Exit permit.
You don't need a NOC letter either, in case you want keep looking for another job.
Make your calculation:
15 days Salary minus Air ticket minus QAR200 (for your business visa). If the result is still worth to fight for, try to get your salary, if not, just leave.
Tell them that you are leaving.
If you exiting Qatar within 30 days from your date of Entry you don't need an Exit permit.
You don't need a NOC letter either, in case you want keep looking for another job.
Make your calculation:
15 days Salary minus Air ticket minus QAR200 (for your business visa). If the result is still worth to fight for, try to get your salary, if not, just leave.