Franch Express Courier — Parcel issue

The parcel that was sent on 17th April from Chennai to Bangalore is not delivered to our address yet. The tracking number is [protected]. The update we get all the time is that the parcel is in SR Nagar branch. When we said we'll go and pick it from the branch, the reply we got is that they are searching for the parcel. I don't know how to proceed. Kindly resolve the issue at the earliest as those documents are of much importance for my child's education.