Cannot connect to internet? [closed]

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http://askubuntu.com – Before I installed Ubuntu 12.04(my problem was that I didn't install the GUI version, which explains my first question), my internet provider shut off our connection for going over the bandwidth permitted. This was back around August 16. It's September, almost October. We've paid our bill in the first week of September, so the bandwidth should be reset. Yet for some reason, I can't connect at all. It basically gives me the same message saying that the conection couldn't be made, which only shows up when a tower is down, or the data us all used. Could it be because I had installed Ubuntu betw (HowTos)