I am Mary from Trulia Consumer Care. I apologize for the inconvenience this has caused you and I am happy to help in any way that I can.
Your listing was posted on Trulia through Zillow Rental Manager, which is a partner site that syndicates listings to Trulia and other websites.
The changes you are requesting to your listing on Trulia will need to be updated at the source of the listing, Zillow. Please log in to your Zillow Rental Manager account and click on the desired listing to update the information on the appropriate tab. After updating the information, scroll to the bottom of the screen and click on the Save & Continue button.
Your listing will update on Trulia within 24 hours once you edit it on Zillow. If you have additional questions, please let me know and I will be happy to help you.
Thank you for using Trulia!
Consumer Care Advocate