It could be that your thermostat is busted. Do call the gas company, just to be sure, but I am betting that's what the problem is. You shut the stove off, and it cooled down, right? Then you don;t need to worry about trying to find anything to unplug. Just get it checked before you try to use it again.

I have had a gas stove since moving to "the city" when I married Paul, and never have had that particular issue. Did you try doing a search on the manufacturer's website?