Bad Service

My account was in arrears but paid in full on 26/08/2022. Proof of payment was e-mailed to Vodacom and I have made numerous calls to the accounts department. I spoke to several consultant who promised me that the service will be resolved within 24 hours. It came to my surprise today when I receive an invoice this morning from Vodacom . I called account department they tell me that my contract is ending 2023 how is that possible? because my contract was ending August 2022, Vodacom is just a ****.