Bridesmaid Problems!

I am struggling with keeping the stress from my bridesmaids that they have caused me under wraps.. It feels like everything i say and want from them is totally not feasible and that I am being a bridezilla. One even told me her job was more important then trying to come in on Thursday when i asked her to because otherwise she would skipped everything that was planned and paid for Friday. She said no and that her job was more important. I would do it for her if roles were reversed. Another one told me she will get in when she can. Its just stressful to me because it feels like i'm not important to these people as there presence is to me. I dont know if im overthinking or overreacting. But i dont want to deal with any of this closer towards my wedding.