Worst customer service

I had a technical error in my bank account and the January debit of R399 failed. All of my other providers contacted me and made payment arrangements to re-debit. Vodacom was the only company that failed to do so and further billed me a R100 penalty fee. This was the first i have experienced and it exposes the greed of Vodacom to their customers. Vodacom was made aware of the complaint and failed to resolve. They also provide the worst network signal compared to all other providers. Continuous buffering on their network, yet being surrounded by various towers. Reported this matter and they have not responded.