LG Electronics — Window ac is not working properly and having some noise during pump start

Address:

New Delhi, Delhi, 110045

I purhcased my window ac from "sri mangla electronics", near ramphal chowk, dwarka sector 7, delhi on march 2016. Since i purchased, i am having some unwanted noise during running ac. I contacted to showroom manger, but he denied to replaced this manchin and asked to contact to lg customer care for repaired. Then i talked to customer care for last 3 months. The service center used to send their engg. But they couldn't solved the issue.
I asked service center manger to replace the machine but he is ready to do this.
I request you to help me to replace this machine as it is making my family's life hell.

Ervice center supervisor:- sachin ([protected])

Thanks & regards
Anil sharma
Mob:- [protected]