Basically, all 3W Infra customers will find a higher total amount on their first month's invoice as a new customer or when new services are added.
All 3W Infra services are invoiced by the calendar month, so the billing period for your services will always start at the first of the month. If you order a new service or are a new customer, the start date of a service or ready for service (RFS) date will often not be the first of the month. This is why there will be a prorated fee added to your first invoice. This covers the period between the start of your service (RFS) and the first day of the next month.
A sales rep will be more than happy to consult you.
