Aquaguard total reviva wp system
Lack of service

I bought aquaguard total reviva wp system before 5 months. Now its not functioning properly for past 2 months. I called the service number repeatedly severly, but there is no response from them for past 2 months. A service man came and said one of the four filters is not working and he said he will bring it and attach it. But weeks have gone without response.. Please take immediate action or please refund the money so that i can arrange for some other company prod