social security

It has been more than a month since I got email saying that my application for disability benefits had been rejected, and an explanation would be coming in the mail*. I have not received an explanation, or any other mail from them. I have now left two phone messages with the person at their office who was assigned to my case, asking how I can appeal the rejection without having received that paperwork.

So far, my contact hasn't answered. There's a 60-day window for appealing the decision. I'm not sure of the right thing to do here. Things that have occurred to me: (a) look for a lawyer to help; (b) file an appeal online to avoid missing the deadline, even though the first page of that process implies that I should have answers to what they have; (c) ask my congresswoman's office for help.

Does anyone know a Massachusetts lawyer or organization that helps with this, or have other suggestions?

*What I actually got was an email saying "we have made a decision, log in to see it" and that got me the bare-bones answer.