Can a fuel company refuse to deliver heating fuel in the heart of winter?

Question Details:

I live in a small town with only 2 propane companies. We rent a tank from one of the companies which is now refusing to deliver to us based on being too busy and it taking more time to deliver to our house. The other fuel company has a policy that they do not fill other companies fuel tanks. We are caught in a Catch 22 here. How are we to keep our house from freezing and keeping our kids fed? We have mostly propane appliances, cook stove, hot water heater, heating units. Important Notice