India Post — consignment no. eu[protected]in not delivered

Consignment no. Eu[protected]in. Package was dispatched on 26 of may containing some important study material which is not yet delivered.
Constantly showing 'out for delivery' but after some time status changes to 'on hold due to local holiday' happening since 10th of june. And also from where it shows ' out for delivery ' is not the destination office (Pin code 121001 instead of pin code - 121006.). The contact details are also inaccessible since no contact no. Is connecting to the host (Not even 1924 ie., complaint number and neither does the toll free no. Is connecting.).