Value for money but gearbox problem

Car is good but reverse gear doesn't engage most of the time. Almost all Tata cars have this problem, but Tata doesn't fix this issue. I have given my car to 2 different service centre authorized by Tata (Concorde motors, sifa motors) but they couldn't rectify it. Second comes the gear rod vibration which makes me feel embarrassed that why did I purchase this car. Overall its a good car but Tata need to work hard in gearbox section.