For a job for which I applied, a telephone interview was arranged because the interviewer had limited availability and was not going to be in the local area any time soon. From the beginning of the interview, it was very difficult for me to hear the interviewer because he was using a cell phone with a bad connection. Adding to the difficulty was lots of background noise; he explained he was calling from a hotel lobby during a break at a conference and other people at the conference were talking. As a result of these issues, I frequently had to ask him to repeat himself, which seemed to annoy him. Obviously, the guy didn't take things well, as I received an email telling me I wasn't suitable for the job almost immediately after the interview.
It crossed my mind when I heard the bad connection and background noise that I might ask to re-schedule the interview. However, I feared the interviewer would not agree with my reasoning and just drop considering me. Would making such a request be considered too rude or might it have shown that I could take charge to improve things or something else?