Seller is quit response back and make me waiting

I was about to purchase one of the item she is selling in here for animal crossing games. Agreed on the price, and told her I'll picking up today. Now i am here at her place, message her numerous time and she quit responding and doesnt read her message. It's so infuriating !! Drove 25 minutes plus waiting. It's really waste my time. I hate the people who treat other people like this. Her name is Sierra nicole. As matter of fact I'm typing this while I am parking in front of apt complex.