Thank you for taking the time to visit the Community although, I apologize that you haven't received a response.
P take a moment to navigate to Quicken > About Quicken and provide the release that you are currently running.
Does this happen with every bill or just some? Are they linked online? If so, what is the name of the biller? Have there been any changes to the account that could be causing the duplication?
The more information you can provide regarding this issue will help the Community to better understand and assist.
Thank you,
-Quicken Tyka