Vodacom continues to rip people off

I app**** for a contract on 30 August 2020. On 23 September 2020 my bank account was debited with twice the monthly installment amount! When i queried it the consultant advised it seems as though i was double debited, but she will however escalate the query. I also did not receive any bill, as no billing method/details were on the system, and i then gave my email address. When i questioned how long it would take to get sorted out, she advised seven days. Almost two weeks later i called in again, and this time a consultant advised me, that the amount for August was for airtime.

How on earth can i be changed a full month for 2 days, being 30 and 31 August. I would understand if it was a prorata amount, but a FULL MONTH! There has got to be a better explanation for this ****************.