Telkom's total lack of service

Telkom Sales office phoned me and offer me a wifi router , which I accepted. Router was delivered n 27/5/2019 but I couldn't use it . After call upon call to the Callcentre I was informed I must go to my closest Telkom shop .The shop assistant checked the system and told me that there is no router registered on my account, I I must phone the call centre .ON THE 12/6 I phoned the Call Centre where Iwas told there is no router on my account , I must phone SALES. I phoned Sales and was informed that there is no router nor sim on my account. O the 13/6 I received an email informing me that the sim will be active on the 13/6. I switched the router on on the 15th . I watched 2 movies and 1 series of 6 episodes over a week span when I was informed that my data bundle is finished .When I phoned the Call Centre I was told that I used almost 20 gigs on the 15th and 16th .There was nobody at home, and in any case it is impossible to use 11 gigs on one day as they claim When I said I am unhappy and I want to cancel the contract Telkom told me I can cancel at a cost of R2187.02 . iIWILL NOT PAY , this is typical of Telkom's lack of service.