I booked a car via "Wisecars" that i found on scyscanner rent a car page. "Wisecars" is intermediary company for which small local companies work. in this case in Sofia: a company called "Addcar". "Addcar bulgaria" tried all sorts of aggressive tricks to make me pay more money - pushing aggressively their own insurance making false claims, trying to charge more money for the security deposit, using a ridiculously high exchange rate when converting from euro to local currency and bluntly stating that they can use any exchange rate they want (there is a fixed official exchange rate), trying to rush through the examination process when giving me the car, charging me 960 euros for 1 tiny scratch ... Avoid them in all cost. It is a pity that such a reputable company does not check intermediaries who provide services on its behalf.