Channel Lineup

Has anyone else signed up for COX television service only to realize they weren't going to receive all the channels they thought?  I recently signed up for COX Advanced TV.  I selected this package based on the channel lineup for my area, available on the COX website.  After they connected my service, I notice there were several channels missing.  I would get a message that said 'subscription required' or something similar.  I double-checked the channel lineup on the COX website then called Tech Support.  I was told repeatedly that the channels I was missing weren't part of the Advanced TV package (even though the website clearly says they are).  They offered to add them as part of an extra-cost pack.  I believe this is very deceptive and I was wondering if anyone else had a similar experience.