I wrote a couple fake political ads satirizing Donald Trump and Hilary Clinton. A few directors expressed interest, but only one, besides myself, managed to produce a video. In addition to casting the film before securing an option agreement and lying to me about his progress throughout the process, he didn't credit me with writing the screenplay. After emailing him several times, he added my name to the video's description, but there's are no credits at the end of the film. It's not a great film that will catapult my career, but I deserved credit for my work. How have other screenwriters handled not receiving credit?