In one version of the scam, they charge a large amount to a stolen (but not yet reported) credit card. Then they add just a little more to the order, and ask you to charge that to a different (real) card, because they say the first card is getting too near their limit. Eventually, some large part of the order gets canceled, and they ask you to credit it to their real card. So you think you are just refunding, but you're actually crediting the card that didn't get charged so much. Later, you eat the losses on the first (stolen) card, when you get the chargeback. But by then, they have spent the money on their real card.
This is frustrating for most of the TTD operators. They are repeatedly a party to a fraud that they don't want to assist with, but legally all they are allowed to do is interpret. They are legally obliged to interpret every word that you say, so when you think you're just talking to the operator, they have to type what you are saying to the caller. If they are caught engaging in conversation directly with either party, they WILL lose their job, and it's fairly high-paying.
It's no different from being a UN interpreter. You may have knowledge that what one of the ambassadors is saying is completely untrue, but the integrity of the system requires you to do nothing but interpret. An operator cannot add comment, or color the conversation in any way. It's the only way that interpretation can be trusted.
Out of dozens of scam attempts, I have had just 2 TTD calls in 25 years that have been legitimate, one of which was just 6 weeks ago. They get those of us with empathy, because we don't want to discriminate just in case the TTD call is really from a deaf person.
BJ
"Hey, let's be careful out there." - Sergeant Phil Esterhaus (character on Hill Street Blues)