how do i beat passive pre-flop super aggressive postflop players

[shark_fishin]

hi, iv been playing 25NL for a while now, and i keep coming across a player type. he limps pre-flop a lot of the time even with hands like KK, and calls a ton of raises whether in possition or out and he never 3bets.

but post-flop he will c/c almost all cbets or donk and then call RR. then on turn and river he will bet if checked to, re-raise if flush hits or flop was paired sometimes ect.. and i will normally have no hand, and when i do, it wont allways be strong enought to call down with, say midpair or something.
and also, when i do have a good enough hand to play a big pot with him like TP/3k or overpair, he folds :-\ or in the few cases when they do call me down/make a move, they suck out on later streets.

iv asked about this, on other forums and iv asked my coach, but i get answers like, dont-cbet, and if i dont c-bet then they will just bet it and take it down... so anyone have any suggestions plz?

thnx