That's awesome! :frusty:
My wife is driving it around right now....
I'll check as soon as she gets home and report my findings.
Hopefully it's an extra that found its way into the car.
If there was no reason for tech to remove your belt swivel bolt then he would not do it. Most likely had one in his pocket from previous job and lost it in your car. Don't worry, if it was missing you wife would notice it right away the minute she buckled up.