<human>: Can you summarize the given text in a few sentences?

Just bought a house. Was delivered a tank of home heating oil, was left bill in the previous owner's name. 

I'm kinda curious here I stand. 

The elderly couple that sold the house to us were amazing as they left us a lawn mower, hedge trimmer, wheel barrow, gas can, garden tools, ladders hose attachments for gutters... etc.  Buncha great stuff a new home owner would need, and we're super thankful so I don't want to eff them over.  

I'm thinking calling the oil company and thanking them for the free oil, then explain what happened.  We were actually considering going with this oil company as they solicited along with many other heating companies, so they know who we are.  

Hypothetically, couldn't I just say "eff off" I didn't order this, and they'd just give me the oil or have to pump it out and bill us for what we didn't use?  lol

Another scenario would be going with this oil company and work out a deal due to the circumstance.  

This is more incentive to switch to partial solar.  Also, the likelihood of me subscribing to this oil company is going to be based on how they handle this, I guess.  

Any advice where I stand would be helpful.  Gonna call them tomorrow morning, but I'm kinda curious where I stand. Any help advice would be nice.
<bot>: Was a delivered a tank of heating oil billed to someone else's name.  Should I try to be a dick and try to get it for free because I didn't order it.  Curious where I stand.