automated  call but it said press 9 for a representative and wasnt a sell call

What was the call about? They have called here twice asking for my son, and they call on my home number which my son doesn't give out because he uses his cell phone. They hung up on me the two times they called asking for him and when he called the number back they wouldn't give him any information and hung up on him also.

A man has called my home phone two times first asking for my son Gerald, when I said he was not here, the caller hung up on me after stating there was no message for my son. Then he called again the next day asking for Jerry(what my son goes by) when I said he wasn't here the man said no message and hung up on me again. When my son called the number back they would not tell him who they were nor what they were calling him for, then hung up on him.