I’m not sure if this has been changed. Originally when Argo was first introduced it seemed to be a bit glitchy in activating. So I made the mistake of activating it / deactivating twice. And I was in fact charged for 2 instances of Argo.
Never got a reply or adequate resolution to support emails. Actually never got a reply if I’m remembering correctly. Only after complaining on Twitter multiple times did I stop getting charged twice for one use.
I’m assuming with recent changes to Billing interface this might now be more easily resolved.
I don’t have any recent interaction with this issue. Just sharing my previous experience. Hopefully those with more knowledge will jump in with replies.