I signed up with Afrihost a few days ago for a new data ADSL data package and on the screen it said I'd be charged R1.00 (or pro-rata of R1 as per their conditions on their website). The invoice came through of pro-rata of the FULL amount for the month but didn't think much of it. I've just checked bank account and I have indeed been billed for the pro-rata amount of the FULL amount instead of only R1. I've just emailed their support team so let's see what happens.