Here's how to avoid the $100.00 amerigas cancelation fee:
Use up just about all the gas in the tank and then get another propane provider. Have them set the amerigas tank out of the way. Don't even call them to come get it. They will either figure it out and come and get it, or more likely they will forget about it. They are so busy trying to figure out ways to scam people and buy out competitors that they don't audit the tanks they have in the field. After a number of years (depending on the state you live in) it will become yours. Call a lawyer and verify that you have the legal right to take possession. Sand blast their name off it and paint it.
Product or Service Mentioned: Amerigas Gas Tank.
Monetary Loss: $1000.