HP India — Poor quality of material use

Dear team . I had purchased one tablet model no HP7 voice tab in the month of Nov 14. After some time the product gives me trouble in battery backup. As per service center they said we replace the set and I got the new one in march 15. But with in 2 month all side of the outer body is going to decompose from all four corners. Please resolve the issue as soon as possible Regards Kulwant Singh Rawatt [protected]