Service Billing based on Usage
Business Requirement for service Billing as follows
1 Customer Agrees for 6000 GB Anually
2 Customer will be billed @2 * 600 = $1200 flat per month flat unless the 6000 GB usage is reached
3 Once the 6000 GB usage is reached, from there on per GB the customer will be charged @ $5 along with 2 * 600 = 1200 per month
Kindly suggest