Aww....Grrrr!

Am attempting to remove 'AUGER' blades... seemingly rusted to auger shaft... from said shaft, which is slightly bent... (due to a neighbour's ROCK in his walkway...)-(I'll chaulk it up to experience!)... Shear pins didn't 'GO', hence bent shaft + a bent impeller shaft(!).  I have new parts (+bearings & belts) ready for install... if I can just get the OLD PARTS... APART!  Any suggestions?