why no one calling the police

Cause if these people had any sense the author wouldn't be able to drag it out so far

true.. can’t even turn off my brain and read this cuz of all the ragebait

There's no need to involve the police; it would be enough for Taesung's father or mother to find out about this for that old man to be completely destroyed, but that won't happen anytime soon because the author's intention is only to prolong the story in a tragic way.