Well, I did not need to write all this , LOL
Good news.
Now is your EKA code and key code in the owners manual?
Having thought about this,
Discool makes a good point. That the lock could be jammed due to lack of use. Maybe a good dose of WD40 / plus gas or similar and leaving for a few hours / overnight willl help.
You need to get hold of your EKA, as without that you are not going to be able to use the door lock to overcome the immobiliser.
If the door lock does not work, after a good dousing of release agent, then I can only think smashing the cheapest and easist to replace window that you can get through and get your owners manual. You will want to have at hand the kit ready to disconnect the battery as it will get noisy.
Hopefully the owners manual has your EKA code and the key code in it.
If it does, then get a new key cut, hoping the locks have not been changed, use key to enter EKA code.
I do not see any way around it at the moment.
Cheers and Good luck.