Dishonest vehicle financing and horrible service!

I made a payment of R150000 towards my Standard bank vehicle finance. I was told the money would be received after 3 business days and then I can confirm how I want the funds allocated. I called after 3 days to confirm and then I was told that I would be emailed my amendment schedule and confirmation of receipt. I don’t receive the call and a few days later I’m told my account is in arrears!! I call in again and they are telling me there is no R150000 payment made to my vehicle finance!! Horrible service and I’ve lost all trust for this bank!!