Shocking add on without consent

In July I renewed my contract. I basically downgraded it. No device just the sim. To my horror I received an account that cost me nearly double than the previous contract. I have loaded with witj recurring bundles I did not ask for or agree to. I cancel them via the app. I also called in and they were canceled and I was told by the consultant that this was normal until I cancel them. Her exact words were.... I am sorry that this was DUMPED on you. I was told that I still need to pay the R500. I am angry and feel violated. I was advised by the consultant to call during office hours to speak to a call centre manager to resolve the issue of the R500 for a contract that only cost R190pm. I have not made use of any of the data and call bundle that they keep loading my account with. I call today the signal is so poor the call kept being cut. Last week I have had only 1 bar show on my signal. Whats the point of all the data being loaded but yoh have no signal.