Im sorry you feel this way. I admit I think you're taking things too personally. I can guarantee everyone's intention here is to help you, even if you feel it's a little too upfront. I know just reading text can be hard to figure out a person's tone, but sometimes the tone you think the person is projecting is not always accurate. At worst you were given constructive criticism and I doubt anyone is judging you for being new. So don't worry! I don't think you started off on the wrong foot yet! Just a simple misunderstanding. What's important is that you got good info to help your noodle baby. Please don't shy away!
Good luck on getting rid of those mites, sounds like nasty business yikes!