Maybe Gas had a right to be upset and charge Gerry for the damage---or to not rent him a scooter ever again. But threats? Unacceptable. There is a way to do business and a way to be a thug.
First-hand experience: I returned my scooter to Tyke with a tiny aesthetic dent in the front fender. I showed it to him, "no problem, man." All he asked is that I rent from him next time I am in Negril. He could have charged me $xx for a repair...and I would not (could not) have complained...but he never even got disrespectful...and earned a renter for life.
I'm not one of those people who expects to pay nothing for my mistakes (denting a fender), or who tries to nickel-and-dime every last purchase I make, or gets angry when I order bacon and I instead get ham, or when my room has only average AC. That's all subjective small stuff. No worries. Big deal.
But where theft or danger can be avoided---I'll speak up.
Whether or not GerryG is an ideal client etc is a moot point. Gas made threats. The end, for me.