Delhivery — Lost my parcel item and not responding to complaint

Address: delhi

Website: www.delhivery.com/direct/app

We courier printer using delhivery direct and amount was paid upfront. The item received at the destination was a book. we filed and raised complaint with Delhivery. After couple of assurance emails that complaint will be looked into, there has been no update. They stopped replyign to email and providing any update on the item.
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