If the lakhwiyah as taken your car to yard in the corner of the Industrial Area, you can never get the help of anyone at any other police in Qatar. Lakhwiya doesnt favour the Qataris either.. So best is, go to the Lakhwiya HQ in Al Waab on Sunday morning at about 10AM(thats when the captain comes) and tell him your situation. He might understand and do something..