Paying for a SIM card I've never even activated

I opened a new account and was handed a sim card that apperntly is a must handed to me. Now my main problem is this actually gets forced down your throat cause they keep calling for you to activate this card. My biggest problem is that for the past two months I'm being charged for a simcard I've never even activated. So where do they upload this data and minutes on when the card is exactly the way it was handed to me. Like I told the consultant that called I'm at Vodacom and I'll never change to any other network. Cause they offered to upload these so called benefits to my existing number but than I had to change networks which I declined. Can someone please explain to me how can you charge me for a number that has never been activated in any sort of way. So now I'm paying 99 rand a month for what cause who's using these so called data and minutes. This is not the first time I'm having a problem with MRP Mobile the last time they refused to change a phone I've bought which they admitted had a problem and still they refused to give me my money back. The area manager I spoke to was just useless and I had to complain numerous times before I got assisted. This is pathetic that's why I'll never buy anything pertaining a phone from them ever. Why am I paying for something I've never used or even activated this is just terrible service once again