I’m wondering whether you have found the modeling software by now or not but I propose that you structure your own model using an Excel spreadsheet. I have tried this on my own cases and it has performed very well.
I can provide you with more input but I’m afraid you’ll need to define more variables such as:
– Customer base
– Adds per month
– Churn %
– Customers’ proclivity to call (new customers/ existing customers demonstrate different behaviors)
– Network grade of service (in case you are setting up a Call Centre for telecomm industry)
– Agent utilization factor %
Please let me know if you are still interested and we can go from there.