Cancellation of contact and refund

I would like to raise that i have cancelled my contract with Vodacom and they are still debiting me R85 and have taken away my R90 airtime before expire date. My Name is Tsundzuka Tlakula cell number ***. Can someone assist me to get my money back of R85 and R90 something airtime. The lady that assisted me to cancel contract was very rude and told me that she will make sure that i loose all vodacom benefits because am not renewing contract.