Hoya Lens India — coating issue on my new progressive glasses

Address:

1202 JEEVAN USHA CHS,, 21 ST ROAD,BEHIND CHEMBUR GYMKHANA, CHEMBUR,, Mumbai City, Maharashtra, 400071

I purchased new progressive specks in october 2018 and the glass used was of hoya.
Since last month the coating has changed on the right side. I went to the shop from where i purchased it. First he said it was a scratch and there is no warranty on it and i will require to change it. Then he cleaned it and then realized it was a coating issue. But tried to tell me it was nothing to worry about and continue using it. I feel i have been cheated because whilst buying they said it was the best. Plus the specks has a foggy appearance from day one. People always tell me to clean it. Don't know what to say
The lens does not come cheap
Tell me what to do or i will post either on twitter or fb about the quality issue