Happy Birthday to you

When I busy doing follow up with my event during April 22-23. Suddenly my phone ring, I though anything special, I pick up my phone and see, it was a fix line number. I though is working purpose.

Here she goes:-
" Happy Birthday to you"

Then I stun , She Stun

Then I was like " ErrR" Then she like " Am I getting wrong number" .
of coz i will reply " yea"

Then she just hang up.