I’ve sold a listing and given the buyer the purchase. They claimed to have bank transferred but as they are with a different bank it may take a while to come through. I stupidly handed over the iphone ( which i was selling ) I have his full name which is real - His account is authenticated and has all good reviews but at this rate he has literally scammed me. I’ve tried multiple ways to get in contact and i’ve lost $370. what should i do?