I think it is better to call and then call any brick river. Villain just does not rep enough and should not be raising you with any value hand here.

I would fold. If he's going to bluff it will be on the flop much more frequently. He will have a ton of 7x, and 65 got there.

Crossing your fingers and hoping that he has a missed flush draw is wishful thinking. He might do this with air some %, but it won't be often enough to call him down.

I don't think I see any reason why he calls flop and raises a safe looking turn as a bluff here. Even vs these guys, I still tink a turn raise looks more towards value. When these guys call down is when we get value. Here I might be a nit and fold after some experience.