tompaulco's Journal: Cable modem bandwidth caps?

Today I got an e-mail from Cox communication saying that I had exceeded my bandwidth cap of 250 GB on my internet plan. Well, this is a complete shock to me. I am not aware of any bandwidth limit on my internet plan. It's not like it's a phone where bandwidth is expensive (and unlimited on my plan).
So, I am only about halfway through the billing period, which I guess means that I have used 250 GB in about 11 days. That is pretty heavy, I must admit. Especially since I am only a casual user of internet at home. We don't do hulu, or netflicks or anything like that. My girls are home from school for the summer, and they play minecraft and watch youtube and play flash games, but I would think it would be hard to use that much bandwidth on those.
So cox directed me to a site where I could monitor the bandwidth usage. I went there and it asked for my login. I don't have a login to my knowledge, so I tried to register. It told me I already had a login, so I asked it to look up my login. After verifying all of my information, it asked me to call customer service. Well, screw that. It sounds like they have assigned me a userID and didn't tell me what it was, so I am not going to waste my time waiting on hold for them.