A vibrant cartoon with colours and smooth animation. Create a 45-second vertical 9:16 Bengali horror cartoon short. Use a consistent 3D cartoon character throughout the entire video. A young Indian boy is sleeping alone at night. At exactly 3 AM, his phone starts ringing. The incoming call is from his own phone number. He answers the phone and hears his own voice saying in Bengali: "দরজা খুলিস না... আমি এখনও বাইরে দাঁড়িয়ে আছি।" Suddenly, someone knocks on the door three times. The boy becomes terrified. Then he hears his own voice whispering from behind him: "আমি তোকে বলেছিলাম দরজা খুলিস না... কারণ আমি এখন তোর ঘরের ভিতরে।" End with a scary surprise. Add Bengali male voice-over, Bengali subtitles, spooky background music and scary sound effects. Make it cinematic, entertaining and suitable for YouTube Shorts