Whirlpool — permanent solution of my refrigerator through replacing it.

Address:

Muzaffarpur, Bihar

I had bought a double door refrigerator (mastermind) in NOVEMBER 2010. However within 1 years5 Month(March 2012) the compressor of the fridge required a replacement which the co.. However, it resulted in requirement to fill the gas in the fridge. Since then every 6-9 months the fridge cooling goes down and whenever I call in whirlpool service people, they come and say gas needs to be refilled. I have till yet spent appx Rs. 10000 on gas refilling and misc works. on a fridge that costed me Rs. 18000 (appx). Whenever I ask for the reason why it happens, they just get away by saying it is a electrical equipment.
Last time I got the gas filled in March 2014 and again nowTWO MONTH(June 2014)Complain No-PT[protected] DT-25.06.2014 are saying me to get it done again. I am asking them to provide a permanent solution to the problem but their response is very casual; as if they are not bothered at all.
If I ask them if it is a manufacturing defect they just do not respond.
Why should a customer bear the loss when he has paid full money for the product? Is the company not liable to either provide a permanent solution or to replace the product?