The following inf received from a friend - This may be useful in case you come across similar situation. Not sure whether it works.
* YOU MIGHT NOT KNOW WHAT HE OR SHE MIGHT DO TO YOU. WHAT YOU SHOULD DO IS TO
* * PUNCH YOUR PIN IN THE REVERSE, I..E IF YOUR PIN IS 1254, YOU PUNCH 4521.
(do not know in case the number same in reverse order too)
THE MOMENT YOU PUNCH IN THE REVERSE, THE MONEY WILL COME OUT BUT WILL BE
STUCK INTO THE MACHINE HALF WAY OUT AND IT WILL ALERT THE POLICE WITHOUT THE NOTICE
OF THE THIEF. EVERY ATM HAS IT; IT IS SPECIALLY MADE TO SIGNIFY DANGER AND HELP.
NOT**EVERYONE IS AWARE OF**THIS.