You are billed a monthly subscription rate that includes a set amount of minutes. If you go over those minutes, we bill on a per minute basis for the total number of minutes you go over. You overage pricing is the same rate as your package minutes, so you're not penalized for going over.
It's important to also know that we don't charge extra for nights, weekends or holidays. Same per minute price all the time.
If you consistently go over your monthly minutes, you should consider upgrading your account to a higher package to save money.