[UK] Have I overstepped trying to help my elderly neighbour?

A 32-year-old UK resident helped his elderly neighbor after the neighbor fell victim to a Microsoft refund scam and spent all his money on an online relationship. The neighbor, in his late 70s, met a 32-year-old American teacher online without direct communication, leading to financial and emotional exploitation. The resident contacted authorities and neighbors to assist, but the neighbor now appears isolated.