No service 3 weeks after 'activation'

3 weeks since 'activation' of my fibre line and it has never worked, it has no internet connection. Vumatel has no phone number to use and the email on their website returns as the mail box is full. In the meen time the ISP is demanding payment, for no service provided, and is threatening to suspend my service. What service? The only feedback if you can find somebody to respond is we'll look into it, then you don't hear from them again. But you want to send rate our service emails. What a disappointment to have to deal with a company like this.