Rto Satara — rc book not received

Address:

Satara, Maharashtra, 415523

I have purchased bike pulsar 150 on 11-07-16 and passing has been done on 27-07-16 but still i have not received my rc book. I have tax receit. I have checked in post office also gone to rto office satara but they said they does not received rc book back. What should i do?
Please look into this issue.

Vehicle no - mh11cc2524

Regards,
Nikhil nale