Account cancelled and still debiting monthly fees

I have now calmed down from last night's unjustified debit order going off yet again after the my account was cancelled 1 day after taking out the contract in June, due to no coverage. <br> <br> This is my third complaint, to have my contract properly cancelled and my money paid back. I returned the device and sim card in the following business day in June as there was no coverage. You have yet again debit my account with a monthly fee. <br> <br> I want my money paid back to me!! I want you to complete cancellation of my contract as should have been done in June.<br> <br> You continually debit my account and i have been understanding thus far, but no more. <br> <br> Further i was informed that the agreement was cancelled and the billing department will refund me. How hard is it to complete a cancellation and refund??<br> <br>