"Wrong number" joke

SantaSingh got up in the middle of the night to answer the telephone.
It was Banta Singh."Is this one one one one?", says the voice.
"No,
this is eleven eleven."
"Are you sure it isn't one one one one?"
"No,
this is eleven
eleven."
"Well, wrong number. Sorry to have got you up on the middle of the
night."
"That's all right, mister. I had to get up to answer the telephone anyway."