After you file

I filed on Feb. 1st and on Feb 22nd is when they said my 45 days started. They stated there was nothing for me to do, and that I should receive a letter. Well I haven't got a letter yet, and so far my state taxes are good and I got those back so wtf. And I thought maybe cuz I owed student loans but I talked to them and it's not in default so it isnt that. I'm very mad about this