Cell C

Last year I got offered a data contract from Cell C for R149 a month for 10 gig daytime and 10 gig night time data. I was satisfied with that. After a while I started noticing my debit orders for the contract was double the agreed upon amount, which didn't make sense as I was up to date with payments. I called the customer care line and was told that I "entered a competition" which increased my contract amount from R149 to R339. That made no sense at all, how is that even possible? I told the consultant that I have no knowledge of doing this and I would like her to correct this and go back to our agreed upon amount of R149 a month. She told me that I would have to dial a number and select the cancel option, I did this, yet nothing changed. A few weeks after this my phone was ******, I reported it to cell c and asked them to cancel the Sim card. I was told it would be done immediately. Fast forward to the end of the month, cell c is continuously debiting my account for an amount I did not agree to pay for a Sim card I'm not using. This is honestly **************** and so ********* it should be *******