"God and The Post Office" joke

A nice young worker from Australia Post ( yes they do exist ), was sorting
through her regular envelopes, when she discovered a letter addressed as
follows:
GOD
c/o Heaven
Upon opening the envelope, a letter enclosed told of how a little old
lady who had never asked for anything in her life, was desperately in need of
$100 and was wondering if God could send her the money.
Well the young lady was deeply touched and made a collection from her
fellow workmates and collected $90 and sent it off to the old lady. A few
weeks later another letter arrived addressed to God, so the young lady opened
it and it read "Thank you for the money, God, I deeply appreciate it, however
I only received $90. It must have been those bastards at the Post Office."