payday one

I made the mistake of taking a payday loan from payday one and dealt with them online and on the phone. it was a 500.00 loan and I found out too late they kept re originating the loan and took 3000.00 from my account over spring and summer and i took out a small one and there trying to charge 800.00 for a 300.00 loan..so far..so i went into my credit union and closed the account and opened a new one and the debit card will also only work on the new one..will this take care of it, and they can't re open the old account to continue to rob me blind? I am on social security disability and dont get much and certainly cant afford this to go on that was my savings they took from me and how i can get it back i dont know can i?