Well first I hope you meant 12/21/10 and not 09.
Now, these companies do not need to put debits through on random debit card numbers. So either you had someone else use your debit card to get their credit report, or you went to a site and entered in your debit card number didn't read all of the terms and ended up agreeing to sign up for credit monitoring.
Call up the number listed and let them know you never signed up for the service and not only want it cancelled you want that money refunded. If they refuse then you just need to put in a dispute with your bank.
But, if you really think your Card was "hacked" look to see if your Credit Union does have a 24 Hour number to report lost/stolen cards. If it does not think about if the lower fees you are paying are really worth it.