How do do you get TIVO to fix defective lineups?

I have two Premiers. Have been a TiVo customer since around 2000. TiVo has deleted - again - the guide information for the local CBS affiliate in Wilmington, NC. Zap2It and Time Warner - I know, Spectrum - lists the correct information and programming.

Calling customer service is futile. People I reach seem to not understand what TiVo is, and that they control the guide information. Claims that I have to call the cable company to fix it. Again, they send a "lineup change message" and poof!...

How do do you get TIVO to fix defective lineups?

How do do you get TIVO to fix defective lineups?