Mediacom's billing is OUT OF CONTROL! I contacted members on chat and via messageboard and was told that their system makes unauthorized irreversible charges, and that they do not have control over their billing system and they cannot remove charges!
Stay away from mediacom. Message board thread can be seen here: http://mediacomcable.com/CustomerSupport/forum/index.php?topic=11603.80
In which you clearly see they admit that they changed my contract without explaining hidden rate increases, and that they refuse to correct it, and when I do the same thing back to them, they inform me they are UNABLE to remove charges!