How quickly can a Estate's Representative be fired?

Surrogate's Court granted letters to the executor in December. NOTHING has been done and no update to the estate has been made to the beneficiaries (I am one of them). When I called and spoke with the executor asking for an update, I received every excuse in the book as to why nothing has been done yet (i.e. too busy, didn't have the funds, etc.). Unfortunately the only asset to the estate (property) is deteriorating daily.