Bad service

In June 2020 i took a fibre with vodacom. i gave them all the necessary information to debit. The first debit was suppose to go off on 25 July and never went off. i called vodacom trying to find out and the call centre agent told me it was sorted it should go off in August. and again in August nothing happened. i called send emails with no success. i ended up going to vocacom shop in cape gate and made the payment there. Today when i was checking my credit score vodacom listed me that i skiped payment. i need help for vodacom to remove the listing and deal with his incomptenet staff. i have proof of emails.