Terrible service from Hyundai Burma

Hyundai Bruma has sold me a problematic car and are not interested in resolving the problem. 1. The lady dealing with my finance gave me an incorrect contract to sign. 2 . After taking delivery of the car I noticed the left side of the car was two different colours. 3. 2-3 of driving the car the battery was old and I got stuck numerous times and it was a back and forth situation until it finally got replaced. 4. The day after the battery got replaced the car could not go into 4th gear. 5. The car started overheating. 6. No one follows up with me on anything I have to continuously call and fight to get anything done. The sales person is Louis Van der Walt and the dealer principal is Brian and the finance manager is Rebecca.