TVS Motor Company — RC book not transferred

Address:

Dadra nagar haveli silvassa

I had purchased a second hand TVS Scotty from Roshan Motors Silvassa last Oct-2019. I submitted all documents to transfer name in RC book with Rs.100 stamp paper as per new rule also submitted I Jan-20, They promised this will be transferred within 15 days. But till they did not changed on my name. I had call many times to sarik but no response even I met to Roshan Motors owners but nothing has done only making false promises. So please help me.