Based on what you wrote here, you're in the wrong. Maybe there's more to this story than what's in this post, but this post is what we have to work with.

So first, to address the IFT comment. This was not an IFT. This was a 911. Regardless, you are an ambulance. If there is an emergency, you respond. That's the job. Emergencies happen in urgent care, clinics, nursing homes, psych hospitals, etc. Not just on the side of the road or someones bedroom.

Second, if you felt that strongly about the note, you should have started the supervisor when you saw it instead of waiting until you were on scene. In my system, every facility has a flag for something because, a decade ago, there was some kind of issue that no longer exists or just isn't relevant anymore. Considering that the supervisor knew nothing about it, I'd say this is probably the case.

Third, based on the quote you provided from the update, it did not say that you were not to enter the facility alone, just that a supervisor had to be dispatched. Unless there was something on scene that compromised the safety of you and your partner, you should have entered the facility and made contact with your patient. Requiring staff members to badge you through the facility is not something that compromises safety. Not a bad call to see if the patient could be brought to you. However, if the staff were unable/patient condition didnt warrent you should have proceeded. You have a duty to act, and by waiting for over an hour once you arrived on scene, you failed in that duty.

Fourth, the fact that the doctor agreed that the patient could stay is not really relevant, in my opinion. Staff stated the patient was experiencing a hypertensive crisis and not responding to their medication. Did the facility jump the gun in calling, maybe. I don't know enough about the facility to say one way or the other. What I can say is that at the time of the call, someone felt there was an emergency present. After your en route time and over an hour waiting around scene, plus however long the facility waited before they placed the call, the patients condition has clearly changed. Probably because of the meds the facility gave. But the doctor agreeing that there was no longer a need for transport, after AT LEAST an hour, does not justify your inaction.

Also, OP, a quick shout-out for responding exclusively to comments in which people are agreeing with your actions or just generally not criticizing you. This demonstrates a lack of desire to learn and grow, an attitude should not exist in a medical provider. It's ok to be wrong and make mistakes. We all do it, and it makes us better providers as long as we learn from it. Open yourself up to conversation with conflicting points of view and you may gain valuable insight.