There are only 3 ways to break this vicious cycle: 1) stop payment on the 'checks' and close the account; 2) pay them in full; 3) file for bankruptcy.
Using the stop payment and/or account closure you run the risk of being charged with fraud and writing bad checks, and payday loan places just LOVE this threat. However, they would still have to prove INTENT to defraud, and most people don't go about goading these loansharks with actual intent to defraud them. Proving intent is not all that simple.
All 3 have consequences of their own, #2 probably is the least, depends on your financial situation if it would mean being homeless or starving. You have to break the cycle or you'll be in an ever-deepening downward spiral of debt to them.