Used car dealer not guvung advance money back

Hello sir , I would like to ask for suggestion in some matter which we are facing right now . We decided to buy a used car few days ago and approached a dealer from olx which is nearby to our home . We went there selected car and fix the amount of 2 lakh 70 thousand . Dealer assured us 100% loan guarantee with 4 and half years emi .As it was in our budget we agreed to go for it. But unfortunately the bank was changing loan amount commute by dealer each and every time first they said we can give 250000 for 5 years Or 270000 for 3 years . Later they changed to 240000 for 4 years . Still we agreed to give 30000 to dealer . We already paid 10000 rs to dealer via phonepe . Now the dealer is asking for more 15000 rs to proceed with loan file . We told him that we wil give remaining amount on delivery day because bank is changing words each and every time What we will do after giving the money to dealer if bank changes loan amount again Also we have not received any verbal conversation from bank regarding loan . As the dealer is beside police station he have contacts with police man . please enlighten us what we shld do in this case to recover our 10k ( we have all the recording and screen shorts to back our claims ) Your suggestion will really matter to us please also know us sections so if we can go with legal remedies - rushika pawar