WARNING: Shoddy repair work on Spiral Cable Recall

[stran]

A word of warning.

Had my 2007 Yaris brought in dealership for Spiral Cable Recall and for Driver/Passenger Seat Track Assembly Recall. Had the repair work done on Feb 23rd, didn't drive the car until yesterday, and while making a turn the airbag and horn assembly fell out and jammed itself against the windshield wiper stalk locking the steering wheel. I had to jam on the brakes to narrowly avoid an accident. Dangerous situation to say the least.

Attached are some pics.

My horn doesn't work now, and I assume that's the loose black cable shown in the picture.

What do you think happened here? I've never removed the airbag module before so I don't know what it is supposed to look like, but I assume the dealership forgot to install the screws holding it place? I see lots of empty screw holes but no screws.