One place I worked had the option of using team interviews which I lovingly called "gang bangs" to fill positions. As a department head I refused to use that process because I was responsible for managing, disciplining, or dismissing employees, and although the option was available I felt it was an abrogation of my duties to use subordinates to pick a new subordinate.
Anyhow to your question, whenever I had an open position I would review the applications and resumes/CV's and select the 5 best applicants to interview. After the interview I would make notes about my impressions and would make my selection after I had finished with the interviews, background checks, and NICS checks for criminal history. Although I might or might not be impressed with an applicant I always tried not to show it so as not to raise false hopes.
After I made the selection I would call the person selected to discuss hiring details and set them up with HR to sign up for tax withholding and insurance benefits and send a personal note to the other 4. The other applicants that were not selected for interviews would get the standard rejection form letter which I called the "go to hell" letter, at least in the privacy of my office.
To improve your chances of having a successful interview I suggest applying only to positions to which you have an aptitude and/or experience so you don't waste your time or theirs, show up ON TIME, be clean and dressed appropriately for the position you want, mute your cell phone or leave it in your car, and try to appear calm and relaxed even though you are a nervous wreck. Calling repeatedly will just annoy the person who interviewed you, since they have more to do than just hire new employees and are already over-worked due to being short handed. Who do you think picks up the slack?