Oh come on. You're completely abusing Comcast's Service and now you're telling some sympathetic story about how it's unfair. 250GB/month is massive, and you knew full well that you were on your last chance, and it's not surprising that they measure upload data as bandwidth (what on earth did you expect?).

If you were going to be using the service like that, you should've asked first. Don't try and tell us you 'forgot' that you had a server down stairs moving gigabytes of data around. I wouldn't want you as a customer either.