CLOSED ACCOUNT YET YOU ARE STILL BILLING ME!

I CLOSED MY ACCOUNT AND THE FINAL CLOSED DATE WAS THE 31 JULY 2017. I PAID MY ACCOUNT AND MY OUTSTANDING BALANCE IN FULL. I HAVE SUBMITTED ALL THE CLOSURE FORMS. YET TELKOM CONTINUES TO BILL ME. THE INVOICE YOU HAVE SENT ME AMOUNTS TO R0.41 CENTS. ARE YOU GUYS UTTERLY INSANE. MY ACCOUNT IS CLOSED. I PAID IN FULL. NOW LEAVE ME ALONE. SORT THIS OUT AS I AM NEVER GOING TO PAY YOU THE R0.41 CENTS DUE TO YOUR ABSOLUTE INABILITY TO OFFER A DECENT SERVICE. THIS IS INTEREST YOU ARE CHARGING ME FOR YOUR LACK OF ABILITY TO DO A JOB. STOP IT. MY LANDLINE NUMBER WAS ********** . CLOSE MY ACCOUNT.