Standard bank will not correct their own mistake!

After 10 years as a loyal standard bank customer, I have finally had enough. As per normal payment terms, I paid off my car in full in December. Standard Bank then erroneously delivered my registration paperwork to the wrong address. The person at that address then committed the product to dealer stock and so now my car is apparently not my car!!! This is ridiculous. It has now taken 2 weeks for anyone to respond to anything and the issue is still not resolved by standard bank. This is their mistake. How long does it take to fix a simple mistake?!??