Flat sale agreement

We have signed a sale agreement, I am Buyer...We have agreed to following: That in pursuance of the said agreement and in consideration of the said sum of Rs.46,50,000/- (Rupees Forty Six Lakhs Fifty Thousand only) out of which the Vendee has paid a sum of Rs.1,00,000/- (Rupees One Lakh only) by way of Bank Transfer from ICICI BANK Dated on 22nd Feb 2022. & Rs.10,00,000/- (Rupees Ten Lakhs only) within 30 days from the date of this Agreement or immediately within 2 working days after approval Loan by from Bank. The receipt of which sum the Vendor hereby accepts, admits and acknowledges to have received the said amount. The Vendee agreed to pay the remaining balance amount of Rs.35,50,000/- (Rupees Forty Five Lakhs Fifty Thousand only) will be paid within a period of 30 days from the date of execution of this Agreement or at the time of Registration whichever is earlier and in between the period the Vendor should clear Bills, and the time of final settlement the Vendor should produce the above said Bills to the Vendee. My Personal Assignment is approved by Bank, but only due to in sufficient documentation or delayed in submitting the accurate documents to the bank the process has delayed. now the Seller is asking me to pay extra 1 lac as toward GPA charges,