Beware of calls from unknown number

A man got a call from unknown number...

Girl: Hi, wish u very happy Valentine's day...are you single?

Man: Yes...Yes who are you?

Girl: Your wife! Aaj ghar aa...phir batati hu...

**couple of hours , He gets Another call from unknown number**

Girl: Are you married?

Man: Yes, but who are you?

Girl: Your girlfriend, you fraud...you cheat.

Man: Sorry baby, I thought it was my wife...

Girl: Wife hi hoon kamine, aaj tu bas ghar aaja...