Cancel or downgrade your service if they really piss you off that much. The only way to make them take note is to affect their bottom line. All the bitching in the world means exactly nothing.
I did so after getting fed up with their cable TV prices increasing literally every 4-6 months with absolutely no enhancements that mattered to me. I dropped down to high-speed internet only with them and I've been just fine with OTA HD TV signals for my TV fix.