Boat — i'm complaining about boat headphone rockerz 235v2

I bought boat Rockerz 235v2 bluetooth headphones a month ago and after one month they are not working, even they are not starting, and I tried to register a complaint so they gave me service centre number and than service centre person told me they don't deal with this product you have to go for online complaint. And it's been 1 week I have sended 3 e-mails to their given e-mail id and called like 100 times in this week they put always on hold and no customer advisor takes calls and nor they replied for the 3 e-mails I have sended. This is the first time I shopped with boat and I found how ridiculous their services are never going to buy there product. Worst companies