I play $10 NL on Pokerstars.

One play I'm confused about is what to do with AKs when someone comes back over the top of my re-raise (the original raiser), and I do not have a read on them.

If somoene raises 3-4x, I re-raise and make it 9-12x, and then they come back over the top of me...

Is it +EV to call or fold?

Im thinking flat calling something like a min-raise would be -EV, and if I'm going to play against their raise/reraise I should probably push... If the best play is not folding.

Enlighten me as to how you all play in this situation.