Thanks for the report Goodw,
Generally the rule of thumb is not to be a dick toward other players, and I do agree that this was kind of a dick move.
Yes we do encourage the use of call outs for missions, but we also know that it's not really helpful if there is no one else around, because no one is online to see it, and markers don't show up for players who are offline.
In this instance you are not at fault for any of this and I will have a chat to the player in question and ensure he/she is aware of the rules.
If you wish to have those items refunded to you, send me a PM and I will set up a refund box for you.