29 april 2010 i was travling isb to abudhabi conection abudhabi to toronto

the poor service of eithad airways have lost my baggae both of them which i checkin one baggage they sended on next flight and other one they CANT TRACE BECOUSE Thr management is so poor all they do just wait for the next flight which come toronto and then they call me that oh on this flight ur bag didnt arrived
now they consider my baggage after 21 days as LOST BAGGAGE
and some one returned my calll and told me airline can pay you 450$ which i dennined to take becouse the stuff in by baggage is more then 3000$ and now they are saying we dont care what u have you have to insurace ur luggage if you have expensive stuff

what are my options airline said we pay on 20$ per kg and your bagg was 24 KG so we will pay you 450 $

what are my options to get money from them atleast 3000$