Yes. We agree to supply a specific number of gallons to a specific location at a pre-determined price for a limited period of time with a beginning date, expiration date, and specific payment terms. It is an agreement. It is a contract, and parties (both oil dealers and consumers) that breach have been found liable and subject to fines in U.S. courts. Customers are obligated to accept delivery and pay for the oil they order in accordance with the terms of the contract.