Payment for propane is due at time of delivery unless credit has been established. If you choose one of the “Advantage Programs,” payments are due no later than the last day of the month. Anyone delinquent for two consecutive months will be subject to gas service interruption, tank removal with associated cost and forfeiture of their pre-buy contract. Out of gas or special deliveries are subject to service charges for all customers. ProGas now accepts most major credit cards: Visa Card, MasterCard, Discover Card, and American Express Card. Use your credit card for uninterrupted service. Another valuable service added in the ProGas Advantage Program.