Hello,
I also live in Sofia and for 2 years I had problems to get good haircuts. I got plenty of disasters I had to live with for months. And finally I decided to do it myself, and I am absolutely satisfied. I found  website where the explanations are given in very clear videos in which the girl combs or cuts her own hair. In this video:

http://contolstyle.com/style/videos/025_corte_cabello.html

you can learn very easily how to cut your own hair (both long and short). Although it is in Spanish, language is no really needed to understand it. This girl is a professional stylist and her website is entirely dedicated to show, in short videos, how to do your own hair/make up.

In the main site: http://contolstyle.com/style/videos/indice/videos_peinados.html
you can see many hairstyles that one can do to herself rather easily.

My hair was a mess when I went to bulgarian hairdressers, and now it's much better. Last week I cut my own hair following that website's instructions and in 5 minutes I got something wonderful. You can try it because there's nothing to lose.

Best regards,

Marta