LOL, I did the same when I had internet with them.. Told me that in September that I had gone over their FUP limit in June and told me unless I reduce usage they would restrict me (weird thing is that they wouldn;t tell me what the limit was).. Then in October they sent me a letter stating that because I hadn;t reduced usage in July they would be restricting me from 6.5Mb (adsl max) to 128Kb during the day..
Did they honestly think I could time travel???
PS.. The limit turned out to be 40GB