removing the ball joints

[kell490]

I can't seem to get the ball joints loose on the upper and lower a-arms. I removed all the bolts put a jack under it and been hammering away with a 2lb hammer they just wont move. I even used a ball joint fork still wont move them. Looks like I screwed up the dust boot doing it but Ill replace them anyway. Any ideas? I sprayed some wd40 in the lower one but can't really get he upper one very well.