Are you doing this on the ground or on a lift?
The best thing may be to soak it down with penetrating oil and let it sit overnight as you already know, these things can be a real pain. What we do in the shop is have 2 people, one with an Air hammer and a flat tip or pickle fork(to act as a wedge)...
If you use the flat ended type, just use it to rattle/shake the mount the bearing is in while the other person uses a BFH (Big Hammer) and whacks it out.
Please ask more of me is needed.
You are not the only one to have this problem. Here is a post by other owners who have suggested removing the entire axle mount and that will make it easier on a bench. Here..
Please do let me know, Genchi