HELP Drivers door wont open at all!!

Hi all

I have a 2002 A4 1.9TDIse. Today I went to work as usual no problems. When I went to get in the car at lunch the door would not open, I tried unlocking the doors with the key fob several times but this made no difference all the other doors functioned normally. I then tried using the key to open the door again this did not work. I eventually climbed in through the passenger door and tried the lever on the inside again this made no difference.

So far I have found out that there is an actuator in the door which locks and unlocks it. I have put my ear to the inside door panel and am quite sure I can still here this functioning. I have also been told that there is a bar/ rod or cable that controls the lock mechanically from the actuator is this right?

I want to take the door panel off to get a look inside but have no idea how when the door wont open

Help