dealing with anger

Yesterday I went to my local Credit Union to deposit a large check from signing for my trilogy. They told me they would put a ten-day hold on the check. I have argued with them for three years straight, trying to explain that I am a writer, writers get paid infrequently. But if they looked at my history, they could see that I always get a check from the same person (my agent). They claimed that because the check was larger than last year, it triggered whatever "spidey senses" that their comp