You're wrong - both on the fact and because it's wrong to insult people and scare them. This is used by stores and all sorts of places! I know because I know the charges I make first hand. BOOYA!
The charge is from Ashley Madison. Remember that the fees are in US dollars and there might be taxes on top of it. Another common fee is in Canada for instance $51.45. It may all vary slightly but the description on statement should read something like this:"AVDL 1-213-271-1390 LONDON GB". Calling this number wont get you anywhere. I think it is just a charging service for the AM service. Dont bother calling it. It's a DATING chat room getting to know others.