The pay-per-minute transactions are not affected by chargebacks.
All direct transactions ("send to this ID" payments) are affected by chargebacks if the customers that transferred you money (via direct pay), do chargebacks to their banks. This happens because the money is taken back from our service and from your account as well.
The same is valid for customers that use stolen cards (or different kinds of frauds).
The important thing is that WE DO NOT ALLOW customers to make chargebacks on our side, and we ban their accounts and block their personal and public data to prevent them for opening another account in our system.
Important! To minimize the opportunity for this to happen we suggest to contact us as soon as possible about any customer that transfers you a large amount of money or that looks/sounds fraudulent/suspicious in any case.