Autopage are sharks

So after cancelling my contract from them, i still receive a bill - apparently for 3 days - R284. How in the hell can i get billed after talking to them on the phone confirming that the last moneys will be paid on 1 July 2015. I want you to pull those records when i called to cancel and reverse this bill of R284 otherwise i will take this further. I will go and cancel my debit order today and make sure you dont take another cent from me