Bad customer service after buying a damaged vehicl

In May this year I approached Wesbank to purchase a secondhand vehicle privately, knowing that they appoint Titleguard to inspect the secondhand vehicle I was comfortable in going this route. After taking delivery of the vehicle I took the vehicle to a reputable panelbeater to remove two small spots of rust on the bonnet. When I arrived at the panelbeater, he immediately pointed out to me that the vehicle had either been in a roll over or a t-bone accident to the left side of the vehicle.. none of this was pointed out to me by Titleguard or the seller, I would never have bought this vehicle if I knew it was in an accident prior. Since then I have been sending photos of proof to Wesbank and Titleguard. Wesbank took the vehicle to a panelbeater and sent me an email stating they want to establish when the accident happened, before or after I purchased the vehicle. Since then they now state that I was aware of the damages and they will therefore not uplift the vehicle. I still haven't received the panelbeater's report after numerous requests as my lawyer needs it. I haven't had such bad experience with a company like this. One would think that they would support their customers