Trackon Couriers — did not received my courier and marked as delivered

Address:	Girl's High school,mahi kinara, 841101
Website:	Track on

My brother sent some important documents from indore to sonpur and when after 7 days we checked the status it was marked as delivered but i and my family members did not received the curier..Complaint for that but did not got any response yet.. 12/11/19 i called up to customer care but no one is picking up the call..and got a msg recently that i have to collect the courier by my self but when i called to Nearest trackon office they said they did not receive my currier...what is this???