A friend of Sasha told us about a cheaper way of calling Bulgaria. It's called Teledump. The rate to Bulgaria is 5 ct per minute, including tax.

Calling using KPN is at least 32 ct per minute, using 1658 it's also at least 32 ct per minute so it's a big difference.

The quality of the connection wasn't extremely well, but then again: 5 cts.... When we call my parents we pay 3,7 cts per minute.