Honda 2 Wheelers India — activa 125

I have bought activa 125 on 13 sep 2018. First it has got defective back tyre and now it is having the defective silencer. Silencer has cut into two pieces without any external force and tyre has got air bubbles on it. I have purchased new tyre and now it's turn for new silencer. An insurance company could not agree to claim because tyre doesn't include in claim and silencer has got rust. How could i bare all this without any mistake from my side. I could not understand how the silencer has got rust within 13 - 14 months of purchase. Who is responsible for all this kind of problems