“Not until you think of the irony”

I found this exact note on the computer I was working at:

REGISTRATION-INDIVIDUALS
PO BOX 9942
MOONEE
PONDS VIC 3039

Dear Sir/Madam:
I have just learned that someone has got the access to my tax file number, and I’m concerned that she may use it.
It will be greatly appreciated if you can issue me a new number.

My personal details:
Tax file number: 244 129 728
Name: Y. Wang
Passport Number: G 211806360