Hello dallievas,
As we don't have any kind of reads or stats, I'd just fold it on turn, since his line seems to be kinda strong, even after the 2nd 9 came he still kept betting into us. Often he would just Check behind a lot weaker hands like Ax type and such, and likely bet again if he has a made hand. As played, if you Calling the turn, then likely Call the river also, doesn't make sense at all, to Call the turn and then give it up on river.
Best regards.