Royal Enfield — silencer fallen down while riding and I lost it in new bike.

Address:

Teknic motor outer ring road bangalore, Mandya, Karnataka, 571434

While riding royal enfield (Its night time), in one of the down area, silencer has been broken/loosen and fallen down (Its all near pandavapura-chinakurali road), its was completely dark no light, after some distance i noticed a big sound came and thought may silencer has been loosen, i came to one of street light pole and checked by stopping vehicle. Silencer itself not there, i went back its was almost a kilometer., i could not find it and i lost it.
Its is manufacture defect if something fallen down like this without observation, how can i protect vehicle. Please help on this to reimburse. Thanks in advance.