Trackon Couriers — product not yet delivered

Address:	New Delhi, Delhi
Website:	Www.trackoncouriers.com

I returned a consignment to
"guruji trading company, kharra no. 16/10, gail no. 7, swaroop nagar extn.
Delhi - 110042" on 5 june 2018 from kishanganj - 855107 vide track on no. [protected] through trackon couriers.
Since 9 june 2018, only the same information about the consignment is shown "out for delivery" when the consignment is tracked.
Amazon.com says that it cannot start the process of replacing the product or refunding it's cost until the consignment is delivered to the company whose address is mentioned above.
Customer service, amazon has also advised me to a certificate from trackon couriers if it says that the consignment has been delivered.
Please do something to update the information about the delivery of the consignment or to issue me a certificate regarding it so that amazon.com may refund me the money or replace the product.
Anil jha
Anil jha niwas, fulbari (Near govt. Middle school)
Post: kishanganj
Distt. Kishanganj
Pin code: 855107 (Bihar)
Contact no.[protected]
[protected]
E-mail: shyamal. [protected]@gmail.com