nj payday loans

I need some help. I had 5 payday loans out with the following companies: East Side lenders $575.00 paid back $690.00; ccs a.ka. money 2 advance $400.00 paid back $620.00; united cash loans $250.00 paid back $225.00; Integrity advance $600.00 paid back $144.00; & cash advance network $500.00 paid back $150.00... I sent all C&D letters, called the FTC, BBB, etc. So far money to advance sent me a refund for the amount i overpaid. and so far Integrity called me saying I owe 913.00 I said i can pay the principle if they send me an address, but she said no. I haven't heard anything else from them. United cash loans just left a message and so did Eastern Lenders. And Cash Advance Network has an agency called ARM of florida calling me and harrassing me saying that i signed the agreement and it says that i must abide by their state not by mine and i owe them $850.00 and they will only settle for 560.00 so i said i would be willing to pay the principle and i told her it was $350.00 since i already made a payment of $150.00 and she said no they will only accept $560.00 and payment arrangements can be made but for the balance of $850.00. needless to say this Ashley Randolph keeps calling my job and asking to speak to my supervisor. What can I do, or better question what can they do.