CHARGED FOR SERVICE I DID NOT SUBSCRIBE TO

I have a cellphone contract that should be charged monthly to me as R 150.00 for 24 months... The SIM card is NOT INSIDE A PHONE, for almost TWO MONTHS NOW... and yet, there are data and service charges on the account... in excess of R 300 .00 HOW IS THAT POSSIBLE... ?????? I phoned last month after getting a R 600 + bill and I told the CALLCENTRE to CANCEL any subscription service because that SIM card is removed from the phone and I did not want any services. So it WAS ALL CANCELLED, and since I do not use the SIM card, I COULD NOT have subscribed to any services ?!?!?! This is so *******, it is nauseating !!!! I should only be paying the R 150 .00 pm I agreed to... and since I do not use this sim, there cannot be any other services charged !!!