I ordered their service for just 1 month with no intention to extend the service for any other period of time. Nothing expressly stated that I will have to cancel it, otherwise they will automatically renew it. Probably somewhere in fine prints, but the order page provided clear impression that I am ordering their service just for 1 month. 2 days after they have charged me for the second month I have contacted them regarding the issue. They replied that they will not return my money because I did not cancel it on time. Result: I paid until June 6, have service suspended May 12!
So, currently they charge me for the service they do not provide.