Not recording activity

I have three cameras I pay for, what I’m finding is a car will pull up the driver get out and the next clip is the car pulling away. Did he drop off something or take something who knows. So as far as security cameras go they are pretty useless.

You gave us almost nothing to go on.
What kind of cameras?
Do they have uSD cards installed? If yes, are you set to record? Continuous or events only?
Do you have Camplus on these cameras? If yes, which variety?
What are your event settings?