Any time a service is added or removed from your account, this line will appear on your bill. Your cable bill charges for one month's service in advance. All services are therefore prepaid prior to usage. The "Partial Month" (known as a Pro Rate) covers the period that you had service in addition to your "Monthly Service" charge.
If your service was just installed or you’ve recently changed your service, partial month charges may be shown on your bill. This ensures that you will only be charged for the correct number of days for your service.
For guidance on how to read your bill statement, please see a sample bill.