I do not recommend contacting them.
First - we chose a tour through the site without a discount, we tried to use a promotional code from a mastercard, we can’t get a discount The second _ the manager says that the promotional code did not work because this is a promotional tour, but the site does not indicate that the tour is promotional and there were no discounts on it.. Thirdly, this tour seemed cheaper by 800 UAH on BankTours.