How to remove a feature from my phone.

I have the feature "Directory Listing Non Published" on my phone which I no longer need or want.  I have tried repeatedly to get it removed, with no success.   Who do I contact to accomplish this?  So far after several phone attempts to remove it, I have not been successful.  I don't care about the $4 but I really would like to call without punching *82 on calls, including calls to Cox 600-8282.  Appreciate any help.  Thanks.