Disappointed by VW Menlyn. They disrespected me!!

I am disappointed by VW Menlyn for poorly attending to my issue. I traded in my old car which they were supposed to settle it with the bank that was financing me, 10 days laters they still haven't settled that account, I only got to find out when that bank debited my account. It was a Hassel to get back my refund from them which this affected my mental and financial wellbeing.