Please keep in mind that when we send out an invoice, if payment is not received within 1 week, a reminder will be sent out. We are a normal bill, however, we do not give a 30 day grace period like some do. Our bills get paid by the 10th of each month, info needs to be in to our account that day also  & we also have our customers supplies to order on a weekly basis so we need our payments in asap after service