Vodacom the worst network ever

My contract phone got ******, so i went and bought a new sim card @Ackarmans for a sim swap, called 100 and was told my NEW CARD has been used and i should go to a Vodacom outlet. Went there and met this rude woman who told me to go back to Ackearmans as she cant help me. Went to PEP got yet another CARD, was told to call 100 and would get help. Did that also and was told i cant be helped i need to go back to the same Vodacom outlet as it is a contract sim card and to add salt to the wound was told to have money as Vodacom charges for a Contract Sim Swap. Now i have had it wit Vodacom. I really wish i could Cancel this contract as all they care about is Billing me and not helping me. I posted a similar Complaint not so long ago and Vodacom Responded with a promise of helping me, did they do that? NO. i need a way to cancel the contract.