[asterisk-biz] Strange request.

[Mobile Wi.Fi]

Hello,

Recently I have a strange request from a customer which whats an 
account just for making calls for 1 or 2 seconds :)
but a daily traffic of 30000 calls per day all over the world. I have 2 
problems with this:

1.) At this type of traffic how can I correctly charge them because 
there's some providers where this type of calls will be charged as an 1 
minute call.
2.) Is obviously that i must activate concurrent calls on customer 
account to be able to archive 30000 requests per day, but our services 
is pre-payed
and I want to deactivate account when the customer finished the amount 
of allowed calls.
3.) As they want world wide access can somebody recommend me how can i 
make conveyable fixed per minute rate in context of variable cost per 
different destinations. I presume i must make a flat rate based on 
weighted average formula adapted at your volume of call traffic. Do you 
use some tools to archive this type of request?

Thank you.

---
Regards,
Mobile-Wi.Fi Team