First interviewer was 15 minute late and didn't offer any apology. One of the later interviewers basically *promised* the company will have an acquisition in a few months. If you work in the oil and gas field, acquisition is not to be promised until a contract has been signed. Another red flag. The last two interviewers said something has came up and they can't talk to me. Told me to come back later on. Very unprofessional.