If you haven't already ordered/signed-up for your Vuma fibre line, then you need to order/sign-up for the fibre on Vumatel's website. You can do this by clicking here. Your Vumatel installation fee of your fibre is a Once-off installation fee of R1710 including VAT, once you have ordered your Vumatel fibre. (This is billed directly to you from Vumatel)
You need to go and Sign-up on RocketNet's website by clicking here, if you haven't already done so.