tried calling Dad just now

I just tried calling my Dad. He picked up and said “Yeah.” I replied “Hi Dad.” I could hear the tv from his end but he didn’t say anything so I asked “Are you there?” After a bit more tv from his end but no talking, the connection ended. I tried calling him back right away but he didn’t pick up.

I don’t know why he doesn’t want to speak with me. I had no idea I’d upset him.