Dell — No resolution in given time

Address:

New Delhi, Delhi

I had submitted my dell tablet service tag BXTKHZ1 in dell service center in Nehru place New Delhi on 14/09/2015. As per him I ll get my tablet in one week but its now 3 week but havent received any call for same and no one is picking up the call what they had mentioned. This is one of yhe third class service what we are facing from Dell, I need immediate solution from Dell side.