Ferrell Gas Stole my personal propane tank because they filled it without my authorization and I would not pay for it. Kalkaska, Michigan

In or about August of 2011, I contacted Ferrell Gas because we had a valve on our tank that was leaking and I was told that regardless of who owns the tank, they were responsible for fixing any defects.  I asked them to fix the valve.  The representative asked me at that time if I also wanted it filled.  I said no as I am planning to sell it and do not want a full tank of gas.  At this time I asked that no gas be put into the tank. 

Apparently, they didn't care that I did not request a fill up because not only did they fill it up, but I received an invoice for the amount of the gas, somewhere over $350.  I called and left a message with Ferrell Gas to let them know that I had not authorized them to put any gas in my tank and I was not going to pay for a fill up. 

They sent the bill to collections.  Once I received the collection notice, I wrote a disbutal and sent it to the collection agency as well as Ferrell Gas.  I stated in the letter that I had not requested nor authorized a fill up and would not be paying that bill.

Rather than looking up my tank to see if it was owned or rented, or contacting me to work out a resolution, Ferrell Gas stole my tank.  I have a receipt showing that the tank is owned, however, they disregarded that and removed my tank from my property.  If they do not return the tank within one week, I will have no choice but to file a police report and take legal action.