loan organics tried to get a 4000 dollar personal loan and thay keep wanting me to give them more money before they will deposit my loan into my account thay have already recived 3000 from me huston Texas

I recived a call from a comany calling them selves Loan Organics saying that i was approved for a personal loan thay said i could get up to 5000.00 dollar loan so i agreed to a 4000.00 dollar loan so they keep saying that i would get the loan if i paid the transfer fees i paid them 3000.00 dollars and still no money they said if i give them another 750.00 dolloars they will deposit the money that i paid them along with the loan amount into my account i am a disabled army vet on a fixed income i can't afford to be scamed.