Maruti alto LX
Noise in gear box and problem in gear shifting

I have purchased this vehicle 2 yrs back. this problem was there since begining, i have requested many times at the dealer service station at Narayani Motors Bhubaneswar Orissa. They have kept my vehicle for 4 times hampering my duty. Changed some parts in gear box. still the problem persisted, for this i was informed that they have decided to change gear box wholesome. already 3 months passed no action have been taken...