What the what?!

So, just barely the phone rang. Odd that it would ring at such a random time of the day, not too odd though. The real stickler is what showed up on the caller id. The little box on the phone showed the number the caller was calling from, but how could that be???? The phone number they were calling from was the very SAME number they were calling. How could someone call from MY HOME NUMBER be calling me? It is impossible. It even had my father's name listed, same exact home number, and NO ONE else was home. How do you explain that?! I didn't answer because first off it was very odd, second it could have been some sort of scam, and third, I'm not an idiot. When your home number is calling you at your home number something is definitely wrong. Just makes you say what the what?! I mean, come on, really?