Kpn Travels — bike not received and don't have proper response and not able to track my bike

I sent my bike from chennai medavakkam through kpn travells with the help of my friend in chennai on may 29. Till today i didn't receive my bike and when contacted medavakkam kpn they said that they sent the bike and they dont know where exactly my bike is. When i try to contact the kpn main branch they are not even picking the call.