Dear you have to report to Traffic department otherwise you have to pay all the fines...No matter if you don't know the arabic or just take your friend with you who can speak arabic...But try to solve the problem as quick as you can..The same it happpend wihth one of my uncle, he sold his car with changing the ownership then after a long period he got the message of 30000 Qatari Riyals radar fines...So hurry up man....Just go and speak in English...Best of luck