Rude Frontline staff

The receptionist lady took me off the list for a rule she had not made me aware of and not stipulated anywhere on the premises. I had put my details down and asked how long it would take. She explained to me that it would be a minimum of an hour and I stepped out to get food. Upon my return she told me she had taken me off the list because I had stepped out. I understand that there is a rule, however I find it exceptionally rude and inconsiderate that she had not informed me that I am to sit in the chair regardless of having paid for the consultation and been told the wait would be an hour. The doctors are pleasant, the front staff however are rude and disrespectful. I don’t know why they opted to deal with people when they give off such a hostile energy. We are already ill. We don’t need to be made to feel like they’re doing us a favour - we are not here to see them in the first place!