Franch Express Courier — Parcel returned to the origin without our knowledge

Tracking number - [protected]
Parcel has been booked on 22nd september but the parcel returned to its origin without our knowledge by saying 'no such person'.. So I had called courier office n requested them to deliver my parcel bt I din receive the parcel yet n also cudnt contact the courier ofc now.. It s saying server not reachable.. What to do.. Very worst service I ever seen..