Renault Tygervalley *********** and unhelpful

I write this on behalf of a friend Annelene Jackobson who has has a terrible experience with Renault Tygervalley. She purchased a new Renault Kiger about a year ago. The vehicle started giving problems after 3 months so she took the vehicle to establish the cause of the problem. When she put the vehicle into reverse or geared down, it made a funny noise. Renault then claimed that it was not damaging to the motor and she should just ignore the problem. Then the passenger window started opening by itself so she took it in again and again and again. After 3 times they replaced the part but it continues to do the same. She also reported the lights that were no shining right so they claimed they fixed it, but they didn't. She has never encountered such *********** people in her life, they are an embarrasment to Renault. They whole experience has cost her so much time and money and it still hasn't been solved.