After several years using Suburban Propane, we finally fired them. We had 2 tanks that were only used for emergency heating. Suburban required that we purchase a minimum amount of gas each year of they charge approx. $70, plus tank rental fees. When the delivery driver came he said there was no room in the tank so he could not aTNE WEEK. We refused to pay the "fee for nothing". Two weeks later they came and took the tanks, unannounced. Good riddance.
They were supposed to pay us back for the gas in both tanks. The way they calculate the refund is to give you a low-ball per gallon for the gas, then reduce that to almost nothing with more fees. This is as close to a criminal enterprise as you will see operating in the open. There are many options for obtaining propane gas service. Any one of them would have to be better.