Bosch Home India — Bosch Fridge

I have raised the complaint 2 time in customer care regarding noise is coming in my fridge, they have responded promptly but problem is still persist. 1st time changed sensor for this and 2nd they came and done something and said it will not happen again. And they informed if sound came again just hold the fridge for some time and the sound will go. This is the way that service engineer told. The sound is also coming mostly in the night time when we are sleeping. My fridge is completed just one year and is extended warranty. This really unexpected from Bosch. I have used only 2 fridges in my life so far and both i have replaced due to no of years worked. I am really fed up the Bosch.