3M Software Developer (Backend Engineer) interview questions

Surprisingly unprofessional. Hiring manager emailed me to set up a time to talk, I gave my availabilities and instead of calling me when I was free, he emailed me asking if I could speak right when he sent the email. He did this twice, expecting me to have my email open the second that I was available. I gave times that I was available to speak, not check my email. Very unprofessional.