Dissatisfied with the service I received

I'm existing client with DStv so i added to my account, that I wanted DStv internet. Spoke to someone and they informed me that a consultant would call me a few days. After a consultant from the company called and my initial request I wanted 50Gbs of data and it was running for R70 pm so the lady said they don't have the 50 GB's offering, they have 220 GB's offering at that moment and it was running for R820 this is inclusive of my subscription that I currently have with DStv . I told the lady 220 was a bit much then she told me I can contact this number *** to arrange for less GB's that would be for 110 GB's she added on to say that once I receive the product I would then plug it in when I pay my subscription they would charge me a prorata rate for the internet . I received the router and SIM card I plug it in and it doesn't work at all tried a few times after that nothing.I then check my account and I see that I was charged for something I never got the chance to use, I call them and they now tell me stories that I need to pay before the network can be connected and what annoys me is that was not mentioned intially, when I was liasing with consultant so I told the 2nd consultant I would like to cancel the internet and for something that never worked intially I'm expected to pay R2000 because I told her I want to return the router and everything else because it's useless . DStv is a total ******* and I would like to be contacted so I can cancel my insurance I have with them as well because this is utter nonsense I'm very dissatisfied with the service I received with them .