My apologies if this post isn't the clearest. I'm really frustrated right now. I found what looked like it had high potential to be my first deal on the MLS yesterday.

Long story short, my realtor claimed that she couldn't get a hold of the listing agent and asked me if I'd be available Saturday. I thought that sounded weird, but didn't think much of it and just gave her my schedule and told her we'd like to see the property ASAP and to keep me in the loop. Today, I notice that the house is pending. After contacting my realtor, I decided to call the listing agent myself. He told me that my agent never contacted him and he had two people who looked at the property yesterday, with the second one offering to buy the property. He said he felt bad about ratting out another agent, but that he hadn't received any other calls on it. 

Besides complaining to her agency/leaving her a negative review, what else can I do?????? I chose this realtor because she had really great reviews and when I was contacting listing agents myself, most of them would never get back to me. Can I report her to the Association of Realtors?

We were planning on using this property as a buy and hold while living there if the numbers matched up, so it makes this whole thing 10x more frustrating.