1) fold preflop, you have practically the bottom of your cutoff opening range, there's no need to defend this unless you are well aware of some massive leaks villain has in 3bet pots.

This is a poor turn-card to bet, just check behind and hope for a good river (7, 5, K, Q, J) and give up otherwise hoping your 7 is good.

I'm guessing you bet the turn and lost the hand.

2) Well obviously he's repping enormous strength. Just call and fold unless you hit I guess...