I have to say, now, all oil and gas company (incl. state oil company as well as other company) want to get tbe best resources as their asset and to protect their asset - this inc. to develop fresh graduate and offering scholarship programme.
There's thousands of fresh graduates in the streets who believe they are the best and most competent; unfortunately the seats are limited. A filtration system shall be developed - may be slightly different between each company but the objective is same. Of course nothing 100% perfect, there's few case what you say might happen. But, if you fail in all your interview, I believe you have to look yourself, and change the strategy.
It's a challenge you have to change into an opportunity.
This's exactly I said to my younger daughter, 13 years old, petite girl, 145 cm, had to play against 17 years old, 175 cm of russian player in ITF jr. (18 and under) tournament. She lose easily 6-0, 6-3 but she promise to herself to work hard and harder. Now, she is flying for another ITF tournament thousand km away.