Hope all is well :-)
To sign up for fibre please go to https://www.afrihost.com/fibre/#fibre-availability
Since your area is not on the coverage map yet, you will need to select the I'm sure I have fibre option as shown on the image below.
If you require further assistance, please
send a message to our WhatsApp helpline: https://whatsapp.afrihost.com
or visit our Help Centre: https://help.afrihost.com/
or see our FAQ page: http://faq.afrihost.com