Still billed monthly, after requesting cancelation on time. Disappointed

I'm really disappointed at Vodacom. I've sent emails and called from the 15th of August to notify them that I'm moving out on the 30th of September and requested them to cancel my fibre account, till today they are still billing me for a fibre I'm not using. I thought I'm doing good by giving them enough notice and paying the August invoice but no one cancelled my account till today. And now I'm getting calls about fibre account that I'm owing, how when I've moved out and did notify them more than a month before? I've been a loyal vodacom customer for more than 15 years. I can't believe that's how they act today.

I need someone to cancel all my accounts and tell me what I should have owned if everything was processed on time by vodacom.