I spoke with an employee at my school's career fair. They reached out to me first about setting up an in-person interview later that day, didn't get back to me until after I reached out twice. The interview was with several employees, pretty laid back. Didn't hear from them for a few weeks until they emailed me with an offer for an internship but the offer had a lot of mistakes that made it seem like I wasn't the person they meant to email. I reached out twice to confirm details and never heard from them again. Very unprofessional, I would've appreciated the courtesy to at least tell me they made a mistake, chose someone else, or anything other than two ignored emails.