I called someone about a machine in the paper, and I wanted to look at it straight away (it was only 5km away), but she said she was going out, so she said I had first refusal and I made a time with her at the earliest time possible in the morning. I asked her if she had any other calls and if anyone else wanted to see the machine and she said she had one other call and no-one coming around.
About 45mins later she tested me and said it was sold, apparently she gave her address to someone else without making a time to come around and he just rolled up.
Don't you hate that when someone makes a commitment and then lets you down?