AWS charges for non-existent service

Hi, on my bill I see high costs for a service called "Elastic Cloud (Elasticsearch Service) (sold by Elastisearch Inc)". I searched for a service with that name, but it seems, there is no such thing. I searched extensively. There are similar things like "CloudSearch" or "Elastic * Cloud", but I don't have anything there. If I open CloudSearch in any region it just displays "You have no search domains in *". Is there a hidden menu somewhere? Thanks, STefan