FRUSTRATED - Case number ***

I would like to express my complete disgust with the way CellC has been treating me these past few months. On September 01st I phoned cellc wanting to buy on contract a tablet advertised for R99.00 . I spoke to the agent who offered me an extra GIG of night data and a different model to the one advertised. The amount then changed from R99.00 a month to R149.00. Later that week I received the tablet . A few days after I received another package with only a sim card in it. While using the tablet for about 2 weeks, I received an sms mentioning something about R1698.00. So I phoned them to find out what that meant, I was informed that I was signed up for an open contract. I said this is not what I agreed on and would like to log a dispute as I will NOT be paying that money. The consultant advised that I'm not the first one to call, agents are not telling people of this open contract story. she then told me since the statement is only coming out on the 7th of October I would need to call back to log the dispute. I did that and since October to date I've not received any feedabck, but my account has been debited twice without my consent for R1698.00. I need answers IMMEDIATELY!!!!!!