Delhivery — My order is untraceable since past 11 days

Hi. My order has been untraceable since past 11 days. My order was supposed to be shipped from Kolkata to Noida but I have no clue where the order is. There is no customer care number in this company and we are highly disappointed by the kind of behaviour that they have shown. Have mailed the company several times but they say the order is untraceable. We asked for a reason but no reason has been given. Will Delhivery take the responsibility to pay me the amount that was there in the parcel? My tracking number is[protected]