Taking away channels

First Comcast took away Cinemax when I was in the middle of a series.  Now I find that they took TCM when there were movies I was looking forward to.   I already pay for HBO and Showtime and won't add anymore premiums.  I have been with Comcast for over 10 years.  Now I'm thinking of spending my entertainment dollars elsawhere.  I pay over $200 a month and keep getting disappointed.   Time to shop around or just cut the cable altogether.