Lease Finance Group/ Payment Systems LFG scam Illinois

I was a approached by a lady who said she was from Chicago saying that she was with a company called Payment Systems. I was leasing a small restaurant and was looking for better merchant services so since the deal sounded so good, I signed up. I have recently found out that the equipment is through Lease Finance Group and that I am screwed because I signed her contract not realizing it was legally binding and I was signing with 2 different companies. I have since relinquished my lease to the restaurant and do not own a thing from it. My question is that since they say they do not take returns on the equipment, what steps should I take so that they cannot come after me. I am moving states and also am closing the business name and accounts and I refuse to pay them $100 every month for the next 4 years. Any advice would help. My credit is crap anyways so that is not a big deal to me, I just need to try and figure out what rights they have to ruin my life.