RO Scam in Patna

This person whose name is Sachin with office address at Jaganpura Patna in the name of M/ s Water solutions is a fraud as he installs ingenuine parts of Water RO kent at my home in Bailey road at Rs 2000 and Within 1 week it got non functional.om calling he tells I am busy , it's raining etc His mobile number is 86920xxxx9.Save yourself from these persons