2007 Proton Savvy review from Malaysia

There's a major problem with my proton savvy AMT. It tends to slide down once I release the brakes during a slope even when the transmition is in D (drive). I find it very dangerous because it even happens even if the slope is not steep. I'm very curious that I have asked and never heard of any savvy AMT owners has ever encounter this problem before. I have sent the car to EON service center for 3 times and the problem still remains. The machanics said everything is normal and nothing can be done. I have tried calling proton customer care centre, but they say it's the "characteristic" of the car. I find it really SCARY and I feel that it endangers my life and even those of my pessangers. Any commets about it. I'm really in need in help because I have abandon the car for several weeks due to this problem.