Nokia India — No info about my Nokia 720 from kottayam Nokia care

I submitted my Nokia 720 lumia hand set in Tuesday 19.5.2015 and they said that will revert back within 2 days but till now I didn't get a call from them and they also didn't pick the phone when I made cals.image calls a 100 times... I don't know why they are behaving in this irresponsible way from such a great electronics company... So I will surely tell all my friends and relatives that do not buy any Nokia product as they are treating their customers in this way...