Victimised by our network service provider

First I got this contract through mondo and finalised by telkom and was 10GB for R99×24 months and it ended on 02/09/2021 and I was debited R99 on 25/09/2021 and didn't understand this debit because their last debit was on 25/08/2021 and so I wrote to their facebook platform and they said it was their last debit and didn't mind it but on 25/10/2021 they debit again a amount of R301 and wrote to them on facebook,twitter and whatsapp and this time I didn't get a consultant from two of their platforms more than a chatbot that's useless and I end up reversing the R301 from my bank and do this reversing every month and they don't call or email to ask about this reversing and their failed debit cost me not them. I just want "hello peter" to help this problem because if u noticed that this is the second review wrote to u with the same problem with two different network service provider