Bad service

I have cancelled my services as I was getting a poor connection and being charged for a line speed i never got. Also the service is terrible, you are forced to communicate using WhatsApp or web chat where the response times are so slow you invariably have to attend to something else or they cannot assist you at all. Then you get penalised with an additional month’s cancellation because their service is bad. Also after the service is cancelled, they do not release the line so Vumatel can connect with another ISP. Trying to follow up is like pulling teeth. I have been 6 days without internet connection and still nothing resolved.