Terrible service

I went to Suzuki Boksburg to purchase a second hand Peugeot that they advertised on Cars.co.za. Went there looked at the car. I asked the dealer if the car been in any accidents. He told me no. I saw a dent order the door that i didn't like. They said if i don't want it other people are interested. They said they fixed the dent but i weren't happy. After signing the deal i did a vin check on the vehicle and found out that the vehicle has a front and side impact collision. I did it because the car kept pulling to the right after wheel alignment. Also everything in the car is rattling. I gave them the copy of the status from FirstCheck. They said must bring the car back and they would cancel the deal which I did. I got another Peugeot from another branch that im happy with also from another SuperGroup dealer. The same bank approved me but now I can't sign due to the account for the car at Suzuki Boksburg is not settled yet. At the moment the account is still open. Suzuki Boksburg has very bad service. I'm seriously very upset with them now. Their service is terrible. They have **** to me that the car wasn't in a accident and now they taking their time to settle the account with MFC