Ok, this is likely the inner handle. The part that that you pull often cracks behind the main part and starts to bend then break causing the door not to open. Often if the bezel is removed, it allows it to work.
The handle is about 45.00 and is not hard to replace.
Drill out the rivet once you get the door panel off, slide the handle forward, then remove the 2 rods. Install the 2 rods, then install the handle.
its not the inside handle. it is actually where something should be catching on the inside. . Can you see the picture? This does not lift up when the rods are moved.
No, the picture does not show.
Do you have an email address I can send the picture to? I can't get it to upload.
Then your latch has probably worn out and there is nothing we can do at this time without replacing it.
I won't tell him if you don't. But you can help him when he does look at this and atleast know what is happening.