Bad customer service

My husband bought nissan navara bakkie pro2 27th September 2021 with Wayne the car was finance with absa, by the 27th October absa didnt deduct installment we contacted Wayne to ask for the contract and when is payment due he told us he's going to speak to the finance lady thobile she never contacted him and he replied he spoke to her and she confirmed 1st installment is due end Nov 2021. WE received call LAST WEEK FRIDAY from absa bank hes in areas he contacted Wayne dealer again, he then tell thobile to contact us and thobile confirmed that the 1st installment was DUE on 25th October. We went to the bank the bank to sort things out and make arrangements only to find out the account number of ny husband was incorrect after we send bank statements and everything they asked. Thats why the debit never went off in the first place. Whe left complains at the branch, only got sorry they cant do anything the deal was done and basically dont care what we are facing now bc they incompetent to put an account no correct in and then to lie still and tell us the 1st payment is only in November 2021 after we asked for contract never received it as of yet had to get the contract from the bank.