Shocking/no service - Webafrica and Vumatel!!

I have continuously tried to contact Webafrica for the past 4 days to sort out my installation, including sending them photos of the ONT box which they say is supposedly connected. I have paid them in advance however there is no service forthcoming!. The Vumatel support team were supposed to bring a new server unit and ONT unit and have failed to arrive despite their assurances that they would be at my home at the specified date and time they gave me. I am a lecturer who requires this Fibre service urgently and made this clear to them upfront. I have sat on the phone waiting for their support centre on 3 occasions to no avail and got cut off! I have also attempted to use their Whatsapp bot and when I got a reference number nothing further happened! This is a disgrace and I would like to cancel the service!