I'm really sorry that you are refused for the third time ..
But in my humble opinion, How about applying for a master degree program or Phd that similar to your past studies because I can see that you are over qualified .
-Maybe, they have doubts that you are not a genuine student for choosing such program
-Maybe you did not provide all your documents ..in your case I strongly recommend you to provide them with every details specially funds and properties.
Don't give up and ask more then apply one more time
Best of luck