I've gone through the interview process of a company which was largely positive. I got an email from HR asking for some documents, so I offered to speak on the phone. I asked if they were considering making an offer, to which she said she cannot answer at the moment because she has to follow a process.
I said fair enough, so I asked her what would be an appropriate time to provide my salary expectation. At this point I seemed to have offended(?) her, she told me I'm a working professional and not a fresh graduate, I should know about this process (I don't, it's my first time looking for another job). She then proceeded to say "I am not going to give you a number", which isn't even what I asked her for. I was then explained step by step what the process would be in a somewhat undignified tone.
Did I screw up something? Or should I be concerned about the company's culture, or are all HR's like this?