Lease Finance Group Scammers, refuse to accept product back to terminate a lease term that was over 5 years ago Chicago Illinois

Many years ago it seems i leased some credit card equipment from these people, through the processor I used at the time. I was not aware that the lease payments never ended. In the meantime I had to have to unit replaced several times due to failures, and called the processor, as I did not realize i was supposed to call the leasing company, and no one at the processor mentioned this. Turns out we have the original equipment from way back, yet the claim the serial numbers arent the same and wont accept the product. I matched them with what i originally recieved, and they are the same. I could have out right purchased the equipment many times over for what I paid, aprox 157.00 a month for 9 years. They are only intrested in selling me on their continued program, and have even offered to pay me 1000.00 and only charge me 39.00 a month to do so. (seems there realy raked me over the coals first time out dosnt it? ) I had already purchased a new piece of equipment from my current processor for about 350.00. now they are wanting to charge me nearly 1000.00 for not returning the original equipment, though i have it, and they have altered the serial numbers to show diff than the ones i did recieve. I will be contacting an attorney, but would rather pay the 1000.00 than to continue to do any further buisness with these scam artists. We had contacted them when we first realized we had been making that payment all these years, and non of these issues were mentioned until we returned the equipment, and they claim its the wrong product.