CAAS sounds like the way to push the alarm buttons best.
The Singaporeans do not want a carrier originating from there using Pan Am 1970s cabin standards.
Had a similar instance with a client on NZ recently but the problem was the J class seat wouldn't recline to flat bed. It was still basically safe but not what was paid for.
An interesting brawl broke out over that after he returned and end result (after a couple of tries at ridiculously undercalled compensation offers to the client) it was resolved in his favour. Good thing he didn't book online. He would still be on hold to the Web!
Don't mess with an old fart who understands fare construction and likewise don't mess with call centres full of spotty little Hermans who know nothing and seek only to make you go away.
Go straight to the total shutdown button with authorities that have power over and above the airline and scare the crap out of them.
As mentioned hit the Scoot and SQ Facebook pages and be prepared to reload when deleted, hit CASA with the details beforehand so you can post this as having been done. CASA don't want them flying our airspace substandard.
Good luck and don't back off.
Best regards
EWL