OK, I received a charge from Amazon Digital to my bank account and went over the records and found out that there were charges dating back 6 months at 9.99 per month almost always charged on the same day of the month. After a couple of hours on the phone with Amazon, they were able to trace the charges to someone I have no idea of...someone named John Cannaghan...who has been using my number to debit directly from my bank for Amazon digital and Kindle services. Eventually, I was escalated to a service rep who BLOCKED the card from that guys account and gave me a refund for the months that I was charged.
IF ANYONE SEES an Amazon digital or Kindle charge on their bank statement and know that they didn't make that charge, I urge you to call Amazon and get it cleared up. They will do their own investigation to recover the money on their end, but they will refund you the money beforehand and block that card from being used by that person or his/her accounts. Remember to have detailed information as to the dates of the charge/s and your debit or credit card that was used to make those charges because if it isn't in your account, Amazon's computers can search EVERYONE'S accounts to see if the particular card was used in any other account.