Boat — one side of my boat rockerz 255 was, not working the executive came and picked it up till now i dont have any information about it

Address:	Shri lal ji mandir shravan nath nagar near bhatia bhawan, Haridwar, Uttarakhand, 249401
Website:	www.boAt-lifestyle.com

I ordered my boat rockerzz 255 from flipkart in may 2019 and one side stopped working last month i registered a complaint and a person came claiming himself as executive of boat to pickup earphones. I gave it to him and it's been more than 15 days that i got any information about them the last message i got from the company's side was that the unit has reached service center and they will revert to me in 4 days but the results are in front of me and yes the toll free number that the websites claim that it is the toll free number of boat, that number is of no use because no one picks up the call other than that machine generated answers and the email is also of no use because everytime i get same replies that our customer service number has been changed etc.
I hope to get a positive response from your side.