Arm Operations Analyst interview questions

Applied for 2 jobs. It took a month before receiving an invitation for a telephone interview at a specific day and time for which I confirmed. Day of interview came, no call. After a week someone contacted me to apologise for a mix up and rearranged for a telephone interview. The day of interview came, no call. Later on the same day, two people contacted me by email. The first person said there was a mix up and the interview is not going ahead (state the obvious). The second contacted me to say the role was no longer available in there had been a delay in communicating this to me. Absolutely appalling candidate experience and even less sympathetic recruitment staff.