mweb will kick you on the belt buckle and talk circles around your issues if you do above 20gb a day on the uncapped free the web account, and flag that uncapped free the web account
they will also suggest an unshaped account, i don't see how doing more than 20gb a day on a shaped is abuse vs more than 20gb on unshaped isnt abuse... (they both share the same AUP)
nb , not my account though, mine is still flying ,doing less than 60gb a month
but, dont think you should go ahead and buy 5 games (average of 8gb each) on steam and download them over weekend, you might get flagged as an abuser
* edit, personally i think 600gb for R550 is still way good value for money in our markets, but then it shouldn't be labeled as uncapped and you get scolded if you cross the imaginary line, or atleast give the info somewhere...