Sofia City Guide

Dear sir/madam, My name is Alice Huynh. I come from Amsterdam. Last weekend I visited Sofia and used a fake taxi from the airport to the city and I was cheated by the driver. I feel so so bad. Also really sad for Sofia, such a nice city. I would like to complain and blame this to the people who will take responsibility in this case. I took photo of the taxi and have now the car number. Could you please tell me who should I contact and solve this problem? Thank you very much. My email is: huynhthudunghtv@yahoo.com Best regards, Alice Huynh