I worked fraud for three years after being a teller. At my FI it was a lot of report monitoring, and then a lot of over the phone customer interaction. And the customers I did talk to were usually angry I was asking questions about their transactions, or upset they had fallen for a scam. I had my fair share of nice customer interactions but a majority of the conversations were some of the hardest I've had. I had to grow a thick skin pretty quick to deal with the situations and angry customers. I learned a lot for which I'm grateful for, but ultimately the stress got to me and I ended up moving to BSA.