Here is an email that we received from TM today.
"Yesterday we experienced some processing issues between 3pm and 6pm on the site which caused certain listings to publish multiple times, resulting in a number of potential duplicates. We are currently in the process of identifying and removing these additional listings and will ensure that you’re not charged for any duplicates that may have been submitted. If you are experiencing any errors or are having any further difficulties please let me know and we’ll work to resolve them with you ASAP."
More info