BD Auto Centre Montague Gardens Poor Workmanship

I took a KIA vehicle for inspection to determine repair ,I was told a cylinder was damaged needed engine rebuild ..the quote was almost what yhe car is worth,wich is entirely made up and ridiculous.They fixed the car at yet again huge expense ..how ever me as the customer had to provide ALL parts, aswell me as the customer had to take the engine away for engineering aswell as pay for that myself. The car was not running good after I received it..I went back numerous times and yhe car overheated ALOT..they said nothing is wrong it does not overheat.I took the vehicle to another workshop who did it in half the time..and rebuilt the engine a 2nd time fully at 20% of the workshop yhat this complaint is about ..vehicle runs immaculately like new.I am busy finding kegal and lawful help ,to get my money back to come to a resolve.