Bearing Removal Problem?

Hi

I've got a Hotpoint WMA46, which has knackered bearings, while following a post on here about changing the bearings, i've come across a problem, i cannot hammer out the old bearings, as they are completely screwed, ie only the outer collar of the bearing's remain, all the rest of the bearing rings has fallen apart.

I think that i can only get them removed professionally now. i've tried using a hammer + screwdriver, hammer + chizel, and not had any luck at all.

Any help or idea's would be nice.

Regards

Lee