Greetings, I've just been having an issue recently and don't know how to approach it. I did an REU over the summer with a professor and I performed quite well. When I mentioned I might apply for the NSF GRFP this fall, the professor told me that if I wanted him to proofread my application essay or to write letters of recommendation, he would gladly do so. I e-mailed him well over a month ago (September 4), attached my paper, and asked him to please proofread it (asking very nicely, doing all of the usual courtesies, etc. etc.). He told me to e-mail him again a week later to remind him, which I did. I haven't heard back since. I've emailed him twice since then, once as another friendly reminder, and once again asking for a letter of recommendation. Still nothing. The deadline for the GRFP is in less than 3 weeks, and I am still up a creek without a paddle. And since my more "technical essay" deals with the research I did with him, there is hardly anyone else that I can have proofread it, since no one at my university even works in the same field as he does. I also really need the letter of recommendation - without it, my application will not be nearly as strong and I might as well not even apply. Honestly, I am really starting to get a bit upset. I gave him plenty of notice, was very kind, and did great work over the summer (his words, not mine). What do I do? I have tried hunting for a phone number but I have found nothing. He is also 1000 miles away from where I live. At this point, I would even be fine with an "I'm sorry, but I'm too busy" email. TL;DR - professor disappeared from the face of the planet, promised me an LoR but won't respond, I don't want to bug him.