I'm looking for a tutor for A level maths revision. I found a facebook group for maths tutors and asked there. I got a lot of direct messages very quickly, mostly 1 line replies like "Hi. I'm a maths tutor." To try to dig through the number of replies I got, I replied with: "Please can you tell me a bit more about yourself? Where did you study? What was your major? When did you graduate? How long have you been tutoring for? What exam do your students usually take?" and I've had several really hostile responses like the one attached.
I didn't mean to offend anyone. I was hoping you'd be able to advise me about what kind of questions are "ok" to ask a tutor? These were people from a facebook group, so there's no information about them at all except for their name and photo. Is it rude to ask about credentials? I would never hire someone in my professional capacity without seeing their qualifications.