I'm also a Mediacom subscriber. This week they've been injecting the occasional notice into web traffic stating that they'll be implementing this cap. I don't like it, but I can live with it. 250 GB cap, with a $10 charge per extra 50 GB used. That's more reasonable than other ISPs, and it's not like I can go to another provider. Monopoly aside, I live in a town of 1500 people. We're probably lucky to have any high speed options.
All that said, like every cable company their rates are exorbitant. I'm currently under a two-year contract expiring in March 2014 in exchange for lower rates. This added fee doesn't jive with me as, per the contract, rates and service cannot change. My usage last month was about 270 GB (I do a lot of streaming, and yes, the occasional torrenting). I wouldn't lose a lot of sleep over the extra $10 for my usage, but not with this contract in place. I'm thinking about giving them a call and offering two solutions -- no overcap charges until the contract expires, or terminate the contract (thus letting me cancel TV service). I decided earlier this year it's time to cut TV when the contract expires; that decision has nothing to do with this cap.
Not like I have a lot of leverage here, and I'm sure they know that. I can threaten to complain to the municipal authority I suppose. Any thoughts on this idea? My biggest problem is that I don't know what this "contract" consists of as a printed copy was not provided; first step is to request and review that.