Sansui India — sansui ac gas leakage issue and customer service not responding

I had purchased a sansui ac on 31st march 2018. It stopped cooling on 21st may 2018. A complaint was registered on 24th may. The technican is saying its a gas leakage issue. However after 10 days the issue has not been resolved.
Sansui is spoiling the name of all japanese brands.
Your customer care service guys are very unhelpful.
Mr sandeep kumar, mr awnish and pradeep kumar sharma never pick up the phone.