Replies to classified ads disappearing/deleted?

I posted in the the classifieds a couple of days ago:
[FOR SALE] - FREE Leftover parts from 1967 Dart Build

I had a few replies and then they disappeared. I thought maybe I was going crazy but I still have the notification email. Has anyone else had this issue? I we now able to delete our own posts? Sorry if this has been discussed. I poked around this forum before posting.