Unknown Insurance fees being charged

I received a call on the 2nd of August from DSTV insurance and they told me about some viewing insurance or something that will cost me R6 over and above my subscription fee. I agreed to take it because it sounded interesting and also not expensive. I paid R 450 on the 1st of September which is my subcription and my account was suspended. I was told I owe a further R 340 or something for 3 insurance policies I have DSTV. I was shocked and tried to call DSTV insurance a lot of times with no success. I sent an email and it was acknowledged however to date no update from DSTV. I was forced to pay this money as my viewing was disturbed and requested that they cancel these policies I want none of them. I still have not received anything and I know that they will do the same thing this month end. DSTV is abusing its monopoly power.