If this is your first bill, it will include some one time only charges. Don’t worry, assuming you don’t make any further changes to your products and services, the subsequent bills will be as per the package you have purchased.
You are billed for package charges a month in advance. However, on your first bill, you will also be charged on a prorated basis for the part of the month you had service before your first bill would have been generated. This is a one-time-only occurrence.
For example, I am in the billing cycle (15th – 14th) and my service was activated on the 18th of March. So, therefore, I would be charged for services from the 18th of March to the 14th of April, which is 28 days outside of my bill cycle.
Going forward, your bill will be calculated based on your monthly subscription, plus any other charges not included in the monthly subscription. Any out of bundle charges such as chargeable Video on Demand, out of bundle phone calls, etc can contribute to your bill being higher than expected as these are not part of your monthly subscription charges.
For example, I have requested to have the Movies+ package added to my account, therefore my bill will be my subscription charges PLUS the cost of the package I would have requested (Movies +).