BNP Paribas interview questions

Interview was scheduled by the agency, process took full day. 1.Technical objective Test 2.Personal tech interview 3.JUNIT technical test 4.Technical interview with senior person 5.Managerial round with Hiring manager 6.HR - 2 rounds HR discussion ended that she will send me email asking for all the necessary documents. NO UPDATES till a week, on contacting agency they told that BNP found me technically strong but not suitable for the project being interviewed. Wow, after 6 rounds happy realisation. Agency asked me to give 3 more rounds for another project within BNP. I disagreed with them, and asked to justify what they mean by "not suitable" after clearing all the rounds? They didn't bother to answer. This thing has become habbit of the BNP to keep on taking interviews of the candidates for different projects, as this happened to third time. My request to BNP, do not ever contact me for any openings, I AM NOT INTERESTED.