Guittard Quality Control Technician interview questions

Quick response from talent acquisition after applying, only had a phone screening call. Was normal basic questions, until asked about overtime. I tried getting further explanation as to how much overtime would be expected, and she gave me some attitude about how "it was clear in the job posting". The job posting only said to "be flexible with hours". Which is fine, but working overtime almost every day and on days off consistently is beyond just being flexible. It suggests to me they're understaffed or have employees that regularly call off.