Contract cancelled and debit order continues

I cancelled my contract at Vodacom and received a sms that my contract will be stopped and finalized on 30/11/2015, the sms also notified me that I should use all my airtime and data before this date. On 01/12/2015 a debit order in the amount of R411.49 were drawn from my account. I did not receive data or airtime for the amount deducted. <br> <br> This is unacceptable, please resolve and pay back the money ASAP.<br> <br> Phone nr: ***<br>