I absolutely understand what an increase in fuel prices can do to someone with a business that relies on fuel. You have to pass the cost on to the customer, the customer can't afford it or won't pay, etc... and down goes your profit margin. If it gets to the point you're not making enough to cover operating expenses, you're done. I do understand that. I worked at a newspaper for 30 years. Our biggest expense besides people was newsprint. The prices fluctuated wildly, and similarly to fuel and refineries, paper mills would go off-line for various reasons like supply of timber, or glut of paper on the market, international trade wars, trucker strikes.... if we passed the cost on to the customer, they'd stop buying the product. Some years there was no profit. Well, you know the shape of the newspaper industry today. Going, going, almost gone.
Good luck to you.