If I were you, I'll choose B. RMA directly at Benq HQ. I believe their HQ or corporate office is in Jaya One PJ. Tell the customer service your story and ask for the RMA service receipt and the person name who handle your case. The last part is threaten or tell the person in charge politely that if the unit fail again in a few weeks after return, a complaint will be made directly to Benq Global HQ in Taiwan.

If this time the return unit really dead again, then choose one or both of the following options:-

C: Complaint directly to Benq Global HQ in Taiwan with the service receipt details plus the person in charge name.

D: Find a place, start your viewcam, burn the unit and post the video on Youtube.