Webafrica and Vumatel

What a terrible experience with Webafrica. My line was just suddenly cancelled with proof from the infrastructure company Vumatel. Our account is up to date and the service at Webafrica shows it is active. I cannot get through to support. The only department answering their calls is the sales department. Holding on the line time and time again for more than 30 minutes. My work is falling behind because I am on the line the hole day. How can this be that you can charge a client and not deliver service. any advice from anyone how to go about in getting resolved, or any advice on another service provider. Unfortunately Vumatel is the service provider in the area and I would have wanted to change that as well.