How to set up billing for Elastix 4 (Asterisk 13)?

Question

Asterisk

Good day,
There is telephony on Elastix 4 with GSM modems.
A lot of money is spent on calls and the director wants to know who and how much he reprimands.
We don't have too many pricing options, you can create rules for everyone.
I climbed through the settings, Elastix has some kind of billing, but as I understand it, it is configured for the line, but not for the user.
If something that can be hung on the user according to the given tariffs, count how much he said, and even better, after a certain amount he could turn it off and send a message that the user needs to go to the director and retell the text of all his conversation with expression and God forbid the director will not like the story, the whole department will talk for a month at the expense of his salary, and then how much they will say so much and deduct.
So billing should be able to:
1. Calculate the amount of the user's slander
2. The amount of the department's
slander 3. Send letters of happiness to several addresses so that I can put a light bulb and a siren that would work in the department where the lucky one was found and the department knew that you can talk to any amount, restrictions lifted
4. block a user who has exceeded the limit before the instructions of the management, it would be good if there is an interface with an unlock button so that the director can press it