I met with an agent, explained I didn't want a long term agreement,  maybe till school was out, as I was only looking at size, areas, prices right now.  She said standard was 6 mo. I said I preferred shorter, she said it's what we agree too ( as in she and I make our own terms).  I signed the agreement,  ask for a copy,  she said she would scan then in and email it to me. 
10 days later, I'm requesting a copy again. She gave me an excuse for not getting it to me.  When I received it,  it said 6 mo. Not what I requested.  I then questioned her and she said no less than 6 mo as that was what all their office's do.  But it was to late to redo the time on it. 
I don't want to work with her. She will not get my listing, nor will her office. But she says I'm locked in until after the 6 mo. Which means the fall and I can't sell in the fall,  it will be off season for selling a family home.