Shocking service

Once this was one of the best fibre providers but in the past few months Vumatel without advising their clients made a change in their service provider and I've been having several down times low speeds and since 23rd July hardly any uptime and they have been telling me its dust in my fibre box yet they have actually been down in my area. Why lie to customers. This is totally unacceptable. I'm extremely dissapointed in Vumatel time to change