back from the body shop amateur's hands...

[Will_w202]

Actually, they body shop did a GREAT job on the paintwork - matches as well as expected, no sand lines, one small fisheye, but I'm pleased.

That said, the inside door panel wasn't reattached completely, the inner door handle doesn't return to a fully-seated position when released, and since my driver door handle was hit, they had to fit a new infrared receiver on it, which 1) does not blink red or green, and 2) only occasionally locked and unlocks the doors.

When I take it back to them to fix these issues, assuming they have no clue why the IR receiver isnt working, how can I direct them? (what's the likely cause)