Unauthorized debit order from my account . No feedback, no reply to emails regarding Policy cancellation.

On the 14 of June I cancelled my life insurance with 1 life. Their retention department told me to send them a mail after I cancelled my policy telephonically. I did that and expected the matter to be sorted. On the 2nd of July the debit order went off. Please reverse the debit order and cancel the contract as I requested 3 times previously. This is now my 4th time that I request cancellation. I am not getting any assistance as the automated response emails says that "A friendly client services consultant will respond to your request within two working days". There is no communication. This must be the worst company to cancel a policy with.