Trackon Couriers — Documents other things missing from the parcel

Address:

110092

I sent the parcel with docket number- [protected] from trackon branch At laxmi nagar delhi to Agra (U.p.) on 21/01/2017. Parcel includes some important document and some valuable things. I was tracking my parcel daily but it was displaying that parcel has been returend to the branch office as the adress was in-correct and connection could not be established over the phone.
Now today i went to collect my courier and when i opened my package i was surprised as all things were missing and only blank paper was there.
Now despite of calling several times i m not able to contcat you guys and the owner of the laxmi nagar branch is saying we cannot do anything.

I want my things back on priroity and would also like to file a case in consumer form for the mis-conduct