Five minute+ run-on message from a customer, failing to actually define the problem, with words. (Far more useless info that is unrelated..) – $0
Annoyance that it’s on the cell line you Specifically asked someone NOT to give to folks – $0
Headache from the details of what they describe in the message – $0
Fact that they failed to leave their phone number (And apparently not listed in the phonebook, AND caller ID did not nab it, AND the 3rd party did not provide it to you…) – $Priceless