Fed up with bad service from Vumatel

I'm at my wits end with Vumatel. We have cancelled our contract with SADV and Vumatel was our ISP with them. We need Vumatel to release our line to Afrihost so that we can merge to a new ISP. It has been taking 10 days to get this resolved and we get automated messages with the same responses every time we ask for feedback. How long can it take to release a ****** line?????? You cannot get hold of them either on the phone it goes to a voicemail saying this person is not available at present. Really I'm fed up and cannot deal anymore. We are working from home how do they expect me to work if I cannot have proper fibre? The Ticket # to Vumatel is SOV-***8