I am writing in brief.

on 9th december between 9.30-10AM, I withdraw 500/- from canara bank ATM which is in madiwala location (2nd left lane of aayeppa temple) ,I got only 500 rs one note, but i wanted one 100/- note, so again i entered 100/- to get a 100 rs note. but ATM showed invalid amount,so i cancelled the transaction and left with my ATM card.
 
after sometime i got a message of withdraw of 5000/- rs from my ATM. I thought its invalid message and my money will be return back,,after waited 1 day, on 10th i launch a complained and customer care.

I got reply from HDFC saying its a valid transcation with the below details.

 DATE TIME TERM
09/12/12 09:48 08887781
WITHDRAWAL TRANSACTION
CARD NUMBER 5264190157454652-000
ACC-NO SAVINGS 08321000009512
RECORD NO. 9460
WITHDRAWAL 500.00
ACTUAL BALANCE RS.11244.05
AVAILABLE BALANCE RS.10744.05
RESP CDE 000
*************************************
DATE TIME TERM
09/12/12 09:50 08887781
WITHDRAWAL TRANSACTION
CARD NUMBER 5264190157454652-000
ACC-NO SAVINGS 08321000009512
RECORD NO. 9461
WITHDRAWAL 5000.00
ACTUAL BALANCE RS.11244.05
AVAILABLE BALANCE RS.5744.05
RESP CDE 000
*************************************
DATE TIME TERM
09/12/12 09:55 08887781
WITHDRAWAL TRANSACTION
CARD NUMBER 5081598111388108-000
ACC-NO SAVINGS SAVINGS
RECORD NO. 9462
WITHDRAWAL 1500.00
ACTUAL BALANCE RS.2605.08
AVAILABLE BALANCE RS.2605.08
RESP CDE 000
*************************************
 
only first transcation is correct.
rest two are incorrect.

Now they are asking me to go to Police to give FIR, what should i do now? should I go to Police station for this reason? please help