Erm I'll clarify what I wrote as you seem to have mistaken what I put in my post

You stated that at the rate you are using your connection you would be around 5Gigs over your cap. I pointed out that after downloading 17Gigs in 4 days you would be over the cap by more than 5Gigs. (16.69 divided by 4 = 4.1725, 4.1725 X 30 = 125Gigs ish)