Panasonic — gas leakage problem

Address:

Ahmedabad, Gujarat, 382480

I am use panasonic products since 2010 because of quality of product and quality of after service so i had purchased panasonic 1.5 ton split ac from "sales india" in march 2017 but within 6 month i had faced cooling issue and right now i have facing gas leakage issue within 11 months. I had registered my complain in service center so technician had visited for ac services and he was saw gas leakage issue in outdoor unit so he advised me for refill gas but he is not sure about same issue will come or not come in near term future so i had talked with panasonic service center head but he does not give any satisfied solution and i think he does not care of it. They are not give any kind of surety for near term future and they told me that our main work is identified issues and resolved it. We are not sure about same issue will not come in near term future. Now please advised me what i should do in this meter. Can you please tell me what is my fault? I had purchased panasonic ac, is this my fault?
My previous complain number is "r[protected]" and now update with complain number "i[protected]". I had not purchased panasonic product for facing this type service so please take proper action and give me proper solution.