Samsung — regarding non returning of phone from service centre.

Address:

Durg, Chhattisgarh

i have been using samsung phones since i started using cellular phones... recently 4 months ago i purchased samsung S 5 gold copper i gave it in raipur service centre for detecting and rectifying the issue related to screen black out and display issue... my phone is under warrenty and its been more than a month i dint recieve my phone its been every week m calling to check the status of phone but they aren't answerable and always ready with random excuses... they promised to give within a week now its more than a month i am waiting for my phone... i am really not happy with the service provider