I got my first notice in May too! Fuck that.lol we got our first over-the-limit notice from teksavvy last month - their early warning system wasn't working so they gave everyone a free month. But yeah we went over 300gb. amazing. but then again my kids both watch netflix as do I, and downloading 58gb of warner brothers cartoons (as I did) doesn't help one's total either.
I'm not concerned. I planned for this when we quit Bell. I can absorb a fuckton of bandwidth costs before teksavvy comes anywhere near what bell charged us each month in addition for tv. I don't miss it.