Standard Bank VAF, McRoberts Attorneys and Fury Mazda

Where to begin, I got my vehicle from Fury Mazda in May 2022, gave my documents and stated I'd like to be debited every month on the 15th, mind you it's my first time buying a car, I wasn't shown where the agreement date was so I continued and signed coz of excitement, later found out I got a balloon payment I wasn't aware of, didn't get a choice between fixed and revolving interest rates, as well as the date was chosen to be the 1st of every month instead of the 15th, been trying to change the date to the 15th for nearly 2 months but it's still a train smash, my first payment was supposed to be on the 1st of July, I call and asked for the debit order to be made on the 15th and they agreed to a one time debit order, they agreed and I paid, following week I get a call from McRoberts Attorneys saying I'm 3 months behind on payment, i then called the bank to find out what the problem was and I was told that it's out of their hands, i then sent a PoP statement to the Attorneys and never got a call back or email to even apologize for the miscommunication between them and the bank, I called again the same day to make a debit date for the 15th of August and they still haven't deducted the amount, I called and they told me its a manual debit and will run within 48 hours, the sad part is that I bank with standard bank and highly rated them but for them to do me wrong like this, I don't want anything to do with that bank anymore and once I'm done with this car payment I'm changing everything, I don't even wanna hear the words Standard bank, they're just so *********** in all aspects.