...an obvious scam. If your wife's sister had a returned item, her financial institution would alert her via snail mail. The fact the callers violated the FDCPA by disclosing personal information to a third party - you - makes it more certain to be a scam attempt. Your sister-in-law can check with her bank just to be on the safe side, but I wouldn't call these jokers back.
Caller with a heavy accent left a message, asking for my wife's sister, by name. She doesn't even live with us, so I don't know why they would be calling us. Said something about an item being returned from her bank.
...an obvious scam. If your wife's sister had a returned item, her financial institution would alert her via snail mail. The fact the callers violated the FDCPA by disclosing personal information to a third party - you - makes it more certain to be a scam attempt. Your sister-in-law can check with her bank just to be on the safe side, but I wouldn't call these jokers back.