The Mysterious Old Phone

So I moved into a new crib and found this dusty old flip phone in the attic, lowkey spooky vibes. I switched it on and saw one contact, just a number, with a creepy message saying not to answer if it called. I laughed it off, but then, skibidi, the phone rang! I answered, and a voice whispered, 'You should not have turned it on.' Total goon moment. Now it rings every night, and I cannot turn it off. Last night, I answered again, and the voice screamed, 'WHERE ARE YOU?' I hung up, but this morning my personal phone buzzed with a message that said, 'We know.' Now I am on edge, wondering if I should toss it or dive deeper into the dank mystery.