Giving Tree Associates interview questions

A Giving Tree employee reached out to schedule a phone interview. When the time came for the scheduled interview, they didn't call, 12 mins after the interview was supposed to take place I got an email requesting to reschedule. I noted this as a red flag but rescheduled the interview anyway. When the time came for the rescheduled phone call, no one called and no one emailed. I never heard from them and refrained from reaching out as I am no longer interested in working here.