Calix Systems Engineer - Customer Facing Role interview questions

Applied through Linkedin, got the call after 1-2 weeks from HR, followed by technical telephonic interview after 1 and half week and then on site after 2 weeks. In the On site interviewer, i was supposed to talk with VP via conference but the setup was not properly configured and ended up both the parties hoping another person is not available. so they tried to rescheduled and later canceled the interview. One of the question where I answer DHCP Decline and the interviewer refused and said there is no such thing as DHCP decline and told me to not to make up things. I tried to convince it might not be the answer but he was firm, so I didn't make arguments and continued with the interview. Analyze the situation and deal with the situation correctly.