Thanks everyone for your replies. The story didn’t end there – turns out there was still a leak, discovered the next day at the bottom of the car at the bolt area. Thee bolt, gasket & O-ring had to be replaced. I figure the O-ring was fried from the incident; they of course insisted it was rust & age.
Have already taken this matter to the head office, and the media. They botched it 3 times in total; at the very least, I’m ensuring the general public gets to know abt their “abilities”