Here's a new one.  I am working on site for a developer. A realtor came into our office with a customer who had indicated interest in purchasing a home in our community. Once the Customer decided to make an offer she said "Do you co-broke?  I am a realtor." 

Of course I was surprised and the realtor escorting her was very surprised, needless to say.  He was out and she was in. We walked over to our office and the other realtor just quietly left. 

We wrote the contract and she put down her deposit.  Things did not work out and the contract was cancelled.  Some of the things that she had to do by a certain date were not done.  When the deadline passed and she could not get the financing the developer called her on 'non-compliance'. She had missed important dates.  I had been in contact with her reminding her that she had to meet these deadlines, but she was not able to do so.

She wrote me a nasty email stating that I had given her the worst representation of any realtor.  As her buyer agent, I should have done this and this, etc.

I responded that I was not representing her, I was representing the seller.  However, I think that calling her and encouraging her to make the deadlines confused her.  It is hard to believe, though, that a realtor could confuse the relationship, especially when one of her first concerns was that she get her 'co-broke'. But that is exactly what happened. 

This has certainly put me on notice.  Next time this happens, I will insist that the agent send a note to me that she is representing herself as the 'buyer agent'...It's always something!