Many of these communications are for one of 2 purposes.
- Start a dialogue with you to try to get more information or money from yourself.
- See if there is a real person at your contact details so they can on-sell your contact details for money.
Almost all of these phishing type emails are after money in some form. Either more data = more money for sale on the "black market" or directly asking you for money..
In this case I would expect the response to be:
- "please give me your bank account number to deposit the funds": where upon doing so money will be removed from your account.
- "please deposit $100.00 in this account to confirm, we will then refund the money along with the rest": which you will never see your money again.
- No response, but a significant increase in spam messages shortly after (maybe a couple of weeks).
My suggestion is to not respond to these communications in any form.
There are other places you can submit a complaint such as the Information Commissioner's Office in the United Kingdom linked here: http://www.ico.org.uk/complaints/ however I'm not sure of the capabilities of such an organisation to deal with individual fraudulent people across many countries.
However please do make a complaint to your relevant organisation as without providing information on the extent of these unwanted messages it becomes more difficult for organisations to respond and help reduce the nuisance this causes.