> I am a college student and lived in a house off-campus with 5 of my dude friends, 6 of us total. Our house is heated with oil, and is very expensive to replace. In the fall semester, we all contributed to the costs. But, this spring I was studying abroad in a different continent. Now, back in the USA, I received a call from the oil company saying we owe $500 for refills in the spring. My roommates think that I should contribute to the costs, even though I was in a different hemisphere and was not asked about refilling, amounts, etc.