Ok.Well to me it looks like your tailpiece for the lock barrel is broken.The car is double locked.You cant open it from the inside.You will have to drill the barrel.A replacement barrel should be available from a spares outlet or the agents.
Step1.Take a screwdriver and insert it in the keyway and lever the silver facecap off
the barrel.The silver facecap is what you see when you are looking at the front
of the barrel.The reason for taking it out is that a drillbit will not penetrate the
Step2. Use a 5-6mm drillbit and start drilling at the top centre of the barrel until you
go right through the barrel.You will feel the drill break free once you are through.
Do not use too much force.Do not use a big drillbit as these barrels are designed
to break on the inside at the centre,thereby causing the barrel to spin when you
drilling which will waste your time.
Step3. Use a 5-6mm drillbit and drill at the bottom centre of the barrel until you go
right through barrel.
Step4. Once you have drilled the top and bottom sections right through,the barrel
will break in two and the circlip which holds the barrel in at the back, will be
displaced.Take a long nose plier and pull the two pieces of the barrel out.
Step5. Take a torch and look into the hole.You will see the broken tailpiece.There might
be a spring in front of the tailpiece.Just move it out of the way with a
screwdriver and it will fall off.Insert the long nose plier in and grab the tailpiece
and turn it clockwise.The door will unlock.
That is it!