This issue has been reported here multiple times on multiple threads, going back years. I've experienced random deletions myself. I wonder how many other customers have had this problem but haven't posted here. The only moderator response has been to email them with account information.
There is not much else they can do. I have reported this several times to Cox support and got no results. The best they can do is ship you another crappy Contour box. They need a complete new solution to their DVR system. If there was another cable provide in my area I would have been long gone.
