This company shouldn't be allowed to do business.Typical Russian scheme type of doing business.I have never dealt with anything like it in my life and I been buying phone cards from different companies for the past 20 years.These Russians take rudeness to a different level.They steal at least 10min of your call time, when I finally gave them a call, she told me "Don't like it, don't buy it"...Unreal!!! They can talk like this in their native Mother Russia, but not here!!! Do not buy Davidzon cards, save yourself money and aggravation!!!