Boat — Airdopes 131 issue

Address:

Ghaisas layout, Surendranagar, rtms road, near sharatar apartment, Surendranagar, Nagpur

I recently brought Airdopes 131 from Flipkart. But suddenly my right side eardope stopped working. I even raised a complaint in nearby boat service center. But I've received a message saying that the invoice I submitted is tampered or edited.
But whatever invoice I had received from Flipkart I've submitted that. This is the worst thing. I lost my money and now they are telling I've edited the invoice. Please resolve my issue or refund my money.