Read my post again. I assume your problem is that the lock actuator is broken, or the latch/lock mechanism is broken. Forcefully pry off the material/leather covered insert (the arm rest) from the door trim. You will probably damage it doing this. Then you can access the lock rods inside the door and hopefully get the door to open. This is the only way - short of trying to unbolt and remove the entire door from the car and i'm not sure if that is even possible!
I had this problem. My VX rear left door wouldn't unlock, and it was stuck in deadlock mode. Trying to pull up the lock button was impossible. I pulled so hard the knob pulled right off!
because I couldn't open the door I had to resort to ripping off the material arm rest section of the door. I just used a screw driver to pry it off. (Breaking most of the clips in the process). I will glue this back on when I'm done.
I then cut the sound deadening material and the plastic rain guard at the back end off the door so I could access the outside door handle nuts (2 x 10mm). I undid them and removed the door handle.
Through that opening I could unlatch the rod that attaches to the door lock solenoid. I could now manually move the deadlocking mechanism and open the door using the inside door handle.
I then had to remove the inside door trim to re-attach the rod that attached to the door lock button. To get the winder off, I inserted a very thick rag between the winder arm and the decorative plastic trim ring and then wound the window down. The retaining clip sprung off.
I can’t be bothered to pay for another solenoid so I’m just going to leave that door as a manually operated lock.