Poor customer service

I have been contacting Vodacom regarding my debit order since the 29 November 2019 as I could see that deductions was not done, I called customer service and they informed me they can only deduct on the 2 December 2019, come the 2 December I called again and I was told that I agreed to pay cash and told the guy that I never agreed to that and they just must deduct and he promised he will reschedule the debit order for me on the day which did went through later on the 2 December, 3 December I called to check the status of my account and was still in arrears and I was told they will update my account within 2 hours this was from accounts department, come 4 and 5 December the same story. Friday the 6 December I called yet again to check and account department informed me they will update the account after 5 hours. 8 December when I called customer service nothing has still not be done and Gladwin informed me that nothing has been done and that he will log a call doe to accounts department and sms will be sent as accounts opens at 9H00 on Sundays and closing at 14H00.