I applied for FA position with Frontier. They emailed me back with time for phone interview. Although to confirm or change appointment online was easy I was in the middle of travelling in Europe. I tried to give them a call at the time I was scheduled but my international call connection kept failing. They couldn't hear me well. Then I tried calling their main office line but their office would block incoming international calls. I told them that Skype call would be our best option and its free. Unfortunately they turned this option down. I was both surprised and upset that a major airline would not have a system set up for world wide interviews. I had to wait until I was able to get to a different location and made online calling to do my interview. Not sure if it was a good phone interview because the process was frustrating and very delayed for each party.