2 Months after settling account, it is still not Closed!!! Close my account!

I have settled my account and paid up in full at the 2nd of August, 2 months later on the 9th October my account is still pending closure. Why?

This was emailed to me on the 7th August: "Please be advised that your account is fully paid up. You are a valued customer whom we would not like to lose, however we will honour your request to close your account. We have prepared your account for closure and will close the account after our next billing cycle."

Close my account! I don't owe you anything and don't want anything more from you. Just Close It and send me proof of closure!