whats the SIA BADGE??

Could Somebody tell me when you take out a LBL you have to hand over your logbook as security....???? Well i didn't they have never asked me for it either. Can they still take your car without them acturley holding the logbook. They go on about the bill of sale that you sign but i thought it was all about them holding the logbook to your car in the event that you dont pay the loan. the tossers colected my car at 6.30am on the 17/01/2008 claiming LBL had sent bundles of letters but got no reply. This could be the breakthrough that everybody is waiting for. LBL SECURES THE LOAN ON YOUR LOGBOOK WHAT HAPPENS IF THEY ARE NOT HOLDING YOUR LOGBOOK CAN THEY STILL TAKE YOUR CAR???????