deCarta interview questions

My first interview was with the hiring manager and he was late for 30 minutes. His question was not structured and we did not complete an hour interview. He asked if I want to come back for another interview. I agreed and they arrange next week for an interview. It was an interview with 3 group of people; 1 engineer, 1 PM and 1 VP of Sales. The interview was informal and relax. I did very well on all the answer and they are suppose to get back to me within a week. There is no feedback whatsoever, no response to email or answer my call after interview! They should at least call me back and tell me if I did not get the job.

I was asked to write several programs. It was related to its job content tightly. Perl, C,C++ related.