Account cancelled but still receiving invoices

Good day. <br> After a long 6 months trying to get my account cancelled and my balance reversed I once again received an invoice for June. PLEASE PLEASE PLEASE sort this out a.s.a.p<br> I even received an sms and email stating that my account has been cancelled and reversed but why oh why do I still receive invoices. And no - the invoice is not to show the reversed amounts - it shows my new balances for June which is payable before 6July.<br> I really cannot believe it takes this long to sort out one account!!!<br>