Pit stop fuel Standish maine Removed my fuel tank without contacting me Standish Maine

I had my propane tank filled when I moved in over a year ago paid it in full by credit card at time of delivery. I still had 40% when they sent me a bill for $100. So I called to find out what was going on. They charged me for non use. I was very polite at first but the lady on the line was extremely rude and told me they are not making enough money off their equipment sitting at my home. I told her I’d make some phone calls because I do not see this as a legal practice. How can you charge someone for something they did not use. I’m a single mother of two children I guess I didn’t use it enough. Before I was able to call them back they removed the tank from the property with the propane that I have already paid for. They did not call me to let me know they were going to remove it. This is bad business practices all the way around. I will not use this company again and am extremely disappointed in the way they handled this issue.