Ambrell interview questions

I applied online and received a call from their HR person. I scheduled the HR interview and spent a half hour answering the typical HR questions. I was then scheduled to meet with their IT Person. Something came up, the interview needed to be rescheduled but I didn't get the message. Came in at the appointed time and was told by the IT person it needed to be rescheduled. Got home then contacted the HR person and she made me feel like I did something wrong because I didn't get the message. Met with the IT Person and she seemed very weird. Stay away from this company as they seem like they don't know what they are doing.