It’s a given that you should call. And text if you have their cell. Email is easy, and can just as easily be filtered (i.e. never read).
To stay in front of your prospect, as a budding microbudget filmmaker, you need to flex your creativity because you're obscure. You and I don't exist. There are 45,000+ businesses in your backyard. You and I are blips. Savvy?
How can you serve them with a creative, visual masterpiece if you yourself can’t commit to serving them, which means following up with them, and engaging them through multiple, creative channels? Video producers and filmmakers - be creative! Don’t be a slacker McFly!