deducting money without phone

It is now almost the end of July and this is still not resolved.my phone was handed in at cellc secunda as instructed by cellc customer service and my account cancelled. Still you are deducting monthly subscription fees! We have called cellc customer care numerous times without any joy! Promises of someone that will call you back _ not happening! We haven't gained anything from cellc I dont have a phone still I pay! Today again you deducted subscription fees! Cell c owes me 3 months of subscription what can I do?