CLOSED account *****ULANTLY opened after 8 months

Hallo Vodacom I have received an invoice and statement (9 June 2018) on an account that was allegedly closed by Vodacom on 31 October 2018. Is this *****??? Why is this account (I ********** -7) still active? I have received confirmation that this ACCOUNT and ALL associated numbers to be closed with Vodacom on 31 October 2017. I have proof via several emails received from Vodacom that you have closed it. For the FINAL TIME!! Please FULLY close the account I ********** -7 and any associated numbers to prevent any current or future misrepresentation, misunderstanding or *****. Please PROOF to me that you have ACTUALLY closed the account. SERIOUSLY DISSAPIONTED Jaco