want to rectify sale deed execution date

I have purchased a piece of land for Rs. 20 lakhs and got land purchasing loan but the seller insisted me to clear the dues and I sell my all jewellery and other valuable items and paid him in full on 10 Dec 2018 and on the same date the sale deed got executed before judicial authority after this bank had released my loan on 25 Dec 2018 and bank authority asked me for sale deed when I deposited the sale deed the bank authorities told me that this deed should be executed after 25 Dec 2018 because we have paid you on this date for purchase of land and how could you executed the sale deed before this date. now I want to rectify the date of execution from 10 Dec 2018 with 25 Dec or after please suggest what to do.