Call an unknown phone no - Pappu hai kya?
She will say " No wrong number".
Again call after five min "Pappu hai kya"
She will be reasonably annoyed "no this is wrong number".
Again call "Pappu aa gaya kya"?
She will say "apka dimag kharab hai kya? kyon piche pade ho?"
Again call after five min " Pappu ko phone dena."
She will cry with all galis.
You just drop the phone.
Call after another five min "Main Pappu bol raha hun, Mera koi phone to nahi aya na?"