Telkom cancellation dispute

I requested a cancellation for my telkom land line and Adsl on 28 June via internet. Received emails with reference numbers for each service. On 23 of July, telkom phoned me to confirm that everything will be cancelled on 28 July. Everything was cancelled on 28 July. I received an invoice now for August, with telkom charging me a notification fee of R 505.00 all together, separately for each service even though I gave them a 30 days notice and they should not be charging me. Someone please help.

Also this August statement is supposed to be my final account yet the deposit that is retained until the final account has NOT been credited /deducted from the amount due. Please help TELKOM.

The number in question is ********** .