what do I do now ?

Was beaten and hospitalized in 2009, was hospitalized in trauma center almost a month , unconcious for about first ten days , have suffered severe debilitating headaches , nose bleeds , exertion , dizzy spells , memory loss at times ,. After dismissal from hospital in 2009 , i filed for SSDI ,that claim was denied all the way thru two denials and at hearing level. at that time 60 day window lapsed and i didn't appeal . in 2012 i subsequently filed new claim , with attorney , claim was denied rather quickly first and second reconsideration . At time of receiveing second denial letter in mail , i spoke with parralegal at attorneys office who had filed my claim and was told that they would be putting in for a hearing with ALJ , that was March 2013 . After not receiveing any correspondence from SSI concerning my case , August 2013 I contacted attorneys office and was told by parralegal that i would be receiving letter from SSA notifying me of hearing date and time. Again after five months with no correpondence from SSA , and or my lawyer , I contacted SSA by phone January 2014 and was told no request for hearing was filed on my claim circa March 2013 . Thus i called my attorneys office and after heated discussion came to realization that they had dropped the ball on my case . Since finding this out in first week of January 2014 , i have recently been mailed a letter from the attorney , stateing that they can no longer represent me on my claim. Why didn't i receive a letter from them stateing that a year ago ? What can i , and should i do now , as i am still suffering medical issues as a result of my initial injury circa 2009 and haven't worked as a result of these problems , since September 2009 prior to injury !! Please help with any advice !!