LFG lease finance group LLC I am a responsible business person. How can what this company doing be legal? Chicago Illinois

 Salesman talked me into changing credit card companies with a lower processing rate then I was previous paying for my small business. He explained that I would have to lease the equipment for $88 per month. What I didn't realize is this was a non-cancelation lease for 60 months! I paid for 30 months before I went out of business. Now they refuse to take back equipment and want me to pay another 30 months! That's $5280 for a machine that is would have cost me maybe $300 cash. I feel so taken....I can't believe this is legal. Now I have to worry about my good credit that I worked hard for. I am sure this was in the contract, but really, 10 pages of legal jargon. This could never happen with a car or cell phone fiance company. Is there any rights for the consumer? PLEASE HELP ME!