Your first bill from Ritter will normally be higher than the next month’s bill because it will include a full month of charges billed in advance plus prorated charges and may also include one-time installation charges. Services on your bill are prorated from the completed installation date to the billing period start date. For example, if your services were installed on the 15th and your billing begins on the 1st, your first month’s invoice will show the cost for services for the upcoming month, prorated charges of those 15 days prior to your billing cycle beginning and one time installation charges.