A few years back, there were times when condo listings on Trulia got matched up with the wrong agent.
I seem to remember it happening when there were several different agents from several different companies listing units in a building where all units had the same street address, and the only thing that distinguished the units from one another was the actual unit number.
Other times, there was some "overlap" when a listing that had expired in the MLS and was immediately re-listed with a different agent was showing up on Trulia as two separate listings, with two different companies, at the same time. This kind of thing probably happened because of delays in "feeds" of listing information to Trulia from sources other than the MLS.
It's always a good idea to check your listings on Trulia, and other real estate sites, to make sure the information is accurate. If there's an error, a quick email to customer support can help to straighten things out. Good luck.