Missing person

I am desperately trying to check the welfare of my Step Father who is based in Alcaidesa. I last spoke with him in July however there has been some activity on his mobile phone more recently. Unfortunately I know the road and urbanisation that he lives(d) on but not the number of the apartment. He was not in contact with any other family so I have been unable to check if he is still there or if he is ok. I am very concerned and am looking to book a flight out to see for myself, Im using this forum as a last resort. His name is Bill Mulholland. Last know to be a resident of La Alcaidesa Golf and Beach Resort, Av. Del Golf, 11360, San Roque. He has a little dog and would commonly visit La Finca restaurant and a local square (semi circle) of restaurants/shops closer to the beach. Any help anyone can offer would be greatfully received.