Trust your instincts. I had a family come late for the first interview and then late again for the 2nd interview where I review my contract. Both times there was no phone call to let me know they were running behind. I took them on as clients, and to this day they are my biggest headache for dropping off as I'm headed down the street for my school dropoff, and arrive on the stroke of closing time, and then staying another 10mins to hear about the child's day. Lesson learned. If the red flags are there now, truly consider what it may bring in the future.