Bad service from vodavom

Im very disappinted in vodacom rewards and vodacom self. They phoned us and tell us that they want to reward us for our good service. 1stly they told us that we will be upgrading 2 off our lines and they would like to give us promotion. They said we can stop both our phones and we will still use our nrs which was a lie. 2ndly they said we can transfer the gigs to our nrs which was a lie. 3rdly they said it was 20gigs each which was a lie. They put the 2 lines on our account on the 7th of july i phoned in 7 days to cancel because we cant use the sim cards at all the modem is not working and we cant use the sim cards. We told them that they give us wrong information. Vodacom said they will eacalate in from the 10th off july im phoning to cancel both lines. I tried to put the sim card in my phone to tranafer the data i couldnt get the sim card connected. As for taking it out they blocked my own sim card this happened 2 times i need to get a sim swap. For 3 months im phoning constantly no one can help me. I even phoned rewards they said sorry we cant help u as u didnt phone in 7 days which i did. Im paying 3 months for 2 lines which i never use because i cant use it. Then again i phoned vodacom they said i can upgrade i said fine but stop the other 2 lines then she promised me its stopped. Which again was a lie. I phoned this morning again they say if i want to cancel i must pay r3000 for each line. Im not prepared to pay that for something which i cant use and was a lie from the beginning. Im really really fed up with vodacoms bad service. We are struggeling for more than a year now with them. I would not recomend them at all. Please can u help me to fix this.