We closed on a repo a month ago using a FHA loan. Today, an unknown propane company yanked the tank off our property with no notification. They say they own the tank, that it was leased by the previous homeowner however that person vacated more than 2 years ago. We thought it came with the property. The were no identifying marks except for serial number. We had the tank filled upon moving in to the tune of $800, which they said is theirs now! Do we have any legal recourse?