Verizon

This is clearly one of the companies people mean when they rail against large corporations.  I cancelled my service last month to switch to ATT.  Because I cancelled on Jan 15, but my "cycle" began on Jan 12 I was charged a full month of fees.  They're just evil.  As more evidence, a whistleblower recently gave the New York Times damning evidence about how they deliberately design their phones so it's easy to get overcharged by accidentally accessing the internet.  As usual in the US, caveat emptor.