You are charged based on the price of the destination you are calling. To check the price rates, simply go to the home [age and choose "Call Credits".
You can also dial the number you want to call in the dial pad or choose your contact, and the call rate will be displayed underneath the number.
Call rates are displayed per minute.
To recharge your credit balance, click on the "Calls Credits" from the home page and then choose the amount you want to recharge with (€1, €5, €10, €20, €50).
Or simply click on your balance display in your dial screen and purchase it.