Gave 30 day intent to cancel in September, telkom still charging me monthly subscription

Please let someone explain to me why Telkom charged me 9 months after my cancellation giving 30 day to cancel?

No one is explaining why I was billed month after month whereas my line was on a month to month basis. No contract like 12 months was in place. So why didn't they attend to my cancellation request?

Now you handing me over to lawyers and trying to charge me legal fees which I'm not liable for.