Here is the email they sent

Dear William,
Our records indicate you initiated an EZ Money transaction with TwinSpires.com between Tuesday, September 3rd and Thursday, September 5th. We apologize for the inconvenience, but a limited number of EZ Money transactions during this time were processed twice by the bank. Please note the duplicated transactions did not impact your TwinSpires.com account, but may have been duplicated in your bank account. We are in the process of correcting these duplicated transactions by reversing the duplicated transactions as follows:
Withdrawal from your bank account/Deposits to TwinSpires.com account
Duplicate withdrawals from your bank account will be refunded to your bank account. There will be no impact to your TwinSpires.com account as these deposits were not placed into your TwinSpires.com account.
Deposits to your bank account/Withdrawals from your TwinSpires.com account
Duplicate deposits to your bank account will be removed from your bank account. There will be no impact to your TwinSpires.com account as these withdrawals were not taken from your TwinSpires.com account.
We apologize for any inconvenience this may have caused. If you have any questions or concerns regarding a duplicate EZ Money transaction, please contact Player Services at 877-SPIRES-1 or player.services@twinspires.com.
Sincerely,
TwinSpires.com Team