A lot of things here sound familiar.

My problems with models pretty much ended when

A) I got an office

B) I hired 3 girls to work in my office that do their job extremely well.

To reiterate other points that eliminated 95% of problems for me:

1) Keep things professional. Nothing turns a model off more then a guy salivating while they answer questions about what they'll do in videos.

2) over schedule your shoots. If they all show.. someone will have to wait, or join in another video, that's just the way it is. Better them then you. (as far as waiting) :-)

3) Keep communication open leading up to shoots, the day of the shoot, and after the shoot.

4) If you don't over schedule have a backup model you can rely on. It's better to have more content of the same model then lose time/money on a location with no model to shoot.

Tombarr... You might be experiencing what I experienced a while back here in Australia... your local competition trying to fuck with your business by sending their guys in and scheduling appointments to not show up. Believe it or not there are people in our business who think there aren't enough hot men to go around and will goto extremes to fuck with your business... but follow the above steps and you'll be removed from that stress. :pimp: