How to handle possible situation of a scam?

I work at a payday advance. I have three customers who share one caregiver. The caregiver always brings the customers in and these customers seem confused and unknowing of what they are doing. One even said to me on the phone during a reminder call "I got scammed" before hanging up. Another time, he didn't know what I was talking about and someone in the background told him "the money you borrowed for *****" and said the caregivers name. Another of these customers was at my window while she took a phone call outside. I asked him how much he was borrowing and he was very confused and said he didn't know, and I'll have to ask her. How should I handle this? The company I work for will not care and will want me to continue lending to them, so is there anything else I can do? I truly believe these people are being scammed. I believe she's being paid by the state to care for them.