Unacceptable support from Wesbank for a mechanically challenged car with water leaks

I recently financed my vehicle with Wesbank. The car sold to be had been in an unacceptable condition fraught with mechanical failures, key mismatches and a significant amount of water leaking into the car. The car is a candidate for rust as once water entered, it often soaked the carpet on the floor. Having been engaging a high end dealership, I had no joy until i left the car and walked out returning the keys to the dealer. At the time the heavy-weight dealer accepted an offer to settle. Wesbank are refusing to take definite action against the dealership as Wesbank are their only Finance house that they deal with. Do I go opt to go to the media for resolution or carte blanche! Take your vehicle finance needs elsewhere as no one from the team return calls or can be traced. I am being passed from pillow to post.