Thx V3G.
What would you advise? Should one not look at the stats on V4Me or what means must one use to gather usage?
VMC or something similar? This probably wont cover all usage seeing routers / other connections aren't catered for.
The official answer is to use vodacom4me, but with the understanding it can be up to 3 hours old.
That's the party line. In reality, stats can be older than 3 hours and at HSDPA throughputs can be quite a lot of data.
So the best bet is to monitor directly on the PC, but again you're let down with the inconsistent VMC.
So the only answer is to do it yourself. I found the best bet is to install a monitor such as DUMeter or Netlimiter (there are others) and monitor your own usage.
Check vodacom4me periodically for the official view, as you'll be billed according to the data as seen on 4me.
Also consider putting a soft-lock on your account.
I need to check on how to monitor directly on the router.