Bad service, unwilling to help and unfriendly.

I bought a car from Suzuki through Wesbank. When I signed the contract the debit order date was the 24th, so I told the lady it needs to change to the 1st of every month as my department were transferred to another company and my salary date will change from 25 every month to last working day of every month. She said not to worry, I can change the date once I am registered on Wesbank's site. So after I changed it on the site and received a mail to say it can only be changed once the first payment was received. So I mailed the lady of Suzuki and said she must follow up. She came back to me saying that they told her the same as the mail from Wesbank. Then I phoned the client center, spoke to a lady and explained to her that I will only get paid the last working day of the month. She was not friendly at all and said it cannot be done. Very bad service when there cannot be a discussion on how this van be fixed, but rather just say cannot be done, thank you and goodbye. Utter bad service for something that is not in my control. I have been with ABSA all my years buying cars and now really regrets that I went with Wesbank.