Personally at:
ESN UMB BB Office
ŠD 3, Tajovského st. 51,
Banská Bystrica
974 01, Slovakia

Sending an e-mail to:
esn.umb@gmail.com

Or through social networks:
https://facebook.com/umb.esn.sk/
https://www.instagram.com/esn.umb.bb/
https://twitter.com/esnumbsvk
https://www.youtube.com/user/ESNumb