Put another way, if they're saying 12TB is their unadvertised effective data cap, he's only allowed to use his connection for 1 day a month. My ISP lets me use

Put another way, if they're saying 12TB is their unadvertised effective data cap, he's only allowed to use his connection for 1 day a month. My ISP lets me use the service all of the days of the month, not just one. His ludicrously low limit is unfathomable.