Incompetency at Telkom

On 26 June 2019 I questioned the debit order date Telkom was using to debit my contract which according to my knowledge was suppose to be 27th of each month and requested it to be changed to the last day of the month. On 26 July 2019 I had to call again because the debit order date was not changed and I reversed the money. On 27 July 2019 I paid the money that was due and now on 31 July 2019 Telkom debited again the amount that is 9 x the agreed amount that has been paid already on 27 July 2019. When I called the consultant promised that the manager will call me before 12h30 on 31 July 2019 but on 13h38 there was never a call from Telkom to explain the debited amount. Telkom is so unprofessional and have *********** consultants.