XtreemSolution Software Developer interview questions

I was not expecting this kind of questions. I told him: I don't know, then waiting for another question. Interviewer: Ok now you can go, our HR will contact you. I don't like rejection. I was confident enough that I will get that position very easily. but I was too much upset after their response. Right now my monthly taxes are too much higher than the salary that I have asked. !!! That Interview was my life turning point!!! "I really don't know the interviewer but thanks for rejecting me that time :D " Otherwise I don't know my potential.