$16 TPTK against donk bets

[Fiasco]

No reads. Heres another spot that felt pretty akward. I dont really know if hes on a worse ace or a 7 or a flush draw. Am I supposed to flat call the raise pf? In retrospect the flop and turn look like blocking bets, but at the time they were hard to interpret.

PokerStars Tournament, Big Blind is t20 (9 handed) Converter on pregopoker.com

UTG (t1500)
UTG+1 (t1500)
MP1 (t880)
MP2 (t1500)
MP3 (t1470)
CO (t2220)
Hero (t1540)
SB (t1460)
BB (t1430)

Preflop: Hero is in Button with A [img]/images/graemlins/heart.gif[/img] K [img]/images/graemlins/diamond.gif[/img]
UTG folds, UTG+1 folds, MP1 folds, MP2 folds, MP3 raises to t60, CO folds, Hero calls t60, SB folds, BB calls t40

Flop: (t190) 7 [img]/images/graemlins/diamond.gif[/img] A [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/heart.gif[/img](3 players)
BB bets t80, MP3 folds, Hero raises to t240, BB calls t160

Turn: (t670) T [img]/images/graemlins/spade.gif[/img] (2 players)
BB bets t120, Hero raises to t360, BB calls t240

River: (t1390) 9 [img]/images/graemlins/diamond.gif[/img] (2 players)
BB bets t770 (All-in), Hero folds