If company is trying to hire people in other countries/cultures to save some buck, they should be mindful that communication may be a bit more of an issue, and try harder, too. Otherwise they'll have the same issue after hiring and not just during interviews.

It's not all up to the interviewee to decipher everything. Both should be trying a bit to get to the same understanding, prior to setting off to work.

Anyway, the company will be wasting money when the communication works out poorly, so it's ultimately up to them.