Boat — Boat airdopes 402 having troubles after 2 replacements

I brought boat airdopes 402 on[protected]. and within 2 months it started over heating, and i claimed for warranty and got replaced with a new product. after 4 months the replaced product stopped working and i claimed for the warranty again and got replaced with a new product. now this product is not charging . it got damaged again. now my claim for warranty is expired and now they wont solve the problem . this is my 3rd airdope wich is getting major troubles due to manufacturing defect. kindly please provide me a solution