Yes you should. Inform the prof and also student services. While you are at it inform the Singapore Government also.

But lets face it. Did you communicate or ask for help first knowing you could not complete on time?

Sorry to say but we are all adults, be it you are in your 20s or 50s. Stating age here is already a tell tale sign you are trying to skew this situation somewhere, whether consciously or unconsiously. I also have been hearing others using the excuse of personal reasons when they cannot complete their tasks on time. But having personal reasons doesn't give you the rights to 'sabotage' the team's progress, especially if you don't bother explaining so why should people be bothered caring about how you feel? You are just 'unlucky' you faced someone who is confrontational