ApinderSingh
There is a Dispute team that will try to ascertain the validity of the transaction.
The dispute team is more in place to arrest false reporting, where one can buy a service, pay for it and then report the transaction as fraud. In your case, since a clear case of fraudulent activity, you need not worry as such. Only question that can come to you is Why did you share the OTP, but then you will can tell them what is what and you should be good.
Not sure of history as such, I can speak only for myself, where i did not had to make the payment.
Lets see what others are saying