Fraud and lack of respect

A number called me 20 times in a row at the same time, 1:30 AM last night. Dad answered it and hung up on him. When Dad answered, before Dad could speak, the caller said, "How are you, my dear?" As soon as Dad answered, he quickly hung up the phone. When Dad called the number back, the caller said the same thing and hung up again as soon as he heard a man's voice.