It's been a year now paying for something I don't get

Please help I'm having a problem with Vodacom IV been paying for something I don't get or should I say IV been paying for someone else I don't even know it's been a year now I don't get helped IV been to Vodacom several times no help please help 🙏🏾in short I took a contract last year the free minutes that I must get they go to someone else when I lay a complain they tell they can make a simswap and give me the number for the person who gets the free minutes and that's someone else number I don't know weather that's ******* so I'm bagging please help me