IDFC Bank — Car loan

Hi, I bought a car from car24 MH43AT2540 in the month of July . Name Darshana Dsouza .The bank insisted that the bank will do the RC transfer as it comes under their policy .I had to pay for the transfer fees .While submitting the document i had informed the bank representative that the name and surname on adhar card is what the RC should feature and not on pan card .I have instructed the same multiple times verbal, written as well i have the whole conservation recorded + i gave all the supporting documents .The representative assured me that He will get it done and i should not worry about it .Now i received the RC with wrong surname same error was done by the bank represantative .When i called him He had no words now i am stuck with this and there is no help from IDFC as they claim that its not their issue ..I am seriously dissapointed with this approach .Please get this resolved .