hopefulgrad28

Has anybody had issues with their recommenders not responding to their email once the deadline is approaching? Early April, I emailed all three of my recommenders and asked if they were willing to write me a letter. I provided them with both my personal statement and resume, and all three said yes and told me to remind them once the deadline started approaching. I contacted them about a month ago and gave them the first reminder that it's due at the end of June. One of the recommenders responded and told me that they were almost done and they submitted soon afterward. However, the other two haven't responded at all. I don't want to be annoying and I know they have other responsibilities and so I waited and send them another reminder two weeks after. Now, it's 3 days before the deadline, and I send my most recent reminder 4 days ago and neither of them has responded to any of my emails. They won't even respond to tell me if they're working on it or if they won't be able to do it anymore. I'm scared that they won't submit it and I don't know if it's normal for professors to submit the letters the day of the deadline.