When did helping people become a crime?

I am still having problems understanding what happen tonight. I know people are becoming rude and morals are going down hill. But if your back yard is on fire don't you want somebody to call the fire department?
I was up late last night waiting for my husband to get home. I smelled smoke, so I went outside. There was fire and smoke coming from behind my neighbors house across the street. Since their lights were on, I assumed that the house behind them was on fire. They go to bed early and have little ones. I called 911 and told them we had a fire. They asked the house number, which I didn't know . They asked me to walk up the street and get the house number. As I rounded the corner of the street I noticed that it wasn't at the house behind my neighbors. But in my neighbors back yard. I run up to the front door and when the person inside answered, I told her that her back yard was on fire. They have a 6 foot fence around their yard, so all I could see was flames thru the slits in the wood.
I walked back around the corner and heard water running. I asked thru the fence if everyone was ok. And if the fire was under control. The person on the other side yelled back. For me to mind my own f###ing  business . I told her I just wanted to know so I could call the fire department back to cancel the call. From there she just started laying into me. I won't burn your ears with everything she said. She just stared attacking me vocally.
 I wave or say hi when I see them, but have never talked to them. I don't even know their names. Found out later from Heidi that she use to be a fire fight. How was I to know that. But that still didn't give her a reason to go off on me the way she did.
It seems to be the now trend to be rude and mean. My husband said I should just let it burn to the ground next time. But that isn't right either.