Debit of Cancelled policy

I cancelled my policy via email on 27th January 2020 , but only got confirmed call from the agent on 3rd Feb 2020 that insurance has been cancelled with an email to confirm this.

On the 10th Feb my account got debited again and back charges is R147 for unpaid item .I then took a screenshot for proof that these amounts went off and requested that Dialdirect be liable for the UNPAID FEE, to date i have received no response after emailing them 2 days ago with screenshot of the details regarding the bank fees deducted for a cancelled policy and no right to debit my bank account after it was cancelled.....

Hope to get this matter resolved asap thx.