worst customer care service

I bought dell inspiron 15 3511 once I got hinge related issue in laptop, after one year I went to service center of my laptop on the day it was the last date of warranty of my laptop (this warranty date correction had to be done to main customer care very often Talked to us but no response that time i feel very bad)to us the service center man told us that it can not be repaired because its warranty date has ended but we asked to repair it but it is under warranty. But still we did not repair it so I called customer care again but no response.

 very disappointed.