I've been with Supanet for years and have been very happy with them,until the last year or so.
I have a 100GB limit,which is supposed to be downloads only,hence I can upload as much as I like. I have 2 broadband usage meters installed,that give me the exact same figures for my usage, every day. They do not tally at all,with what Supanet say I'm apparently using, but if you included my uploading in the totals,they are quite close.
I have contacted Supanet on various occasions, who say my package limit is for downloads only, but without much additional info,to convince me. They just talk to you,like you were born yesterday,telling you that downloading movies,going on gaming sites,etc, increases your usage,duh.
I know the ultimate way to monitor my usage, is to track my router usage via snmp, but my router is not compatible for this, without tinkering with source codes and stuff, which I'd rather not risk.
Would love to know,if there's any other people out there,having similar issues.