I'm ****med by cell c

Last time I wrote a review was about cell c,where I app**** for a device and they delivered a sim card,I told them I don't want a sim card,the device was delivered,but when I tell them I don't want the sim card they told me I must go to the police station to get an affidavit I did that then today they tell me they have listened to the recording and I agreed to take the sim card,I told them the lady who sold it to me said the device comes with a sim card with 10 gigs evrymonth she didn't tell me the sim is a contract ad well,they said im liable for the debit order for the sim card,I told them I won't afford ro pay both contracts they must cancel the sim card cause I don't want it,they say they want R3000 to cancel im not sure why cell c is like this,to me this is ******** people