If a chap 13 bankruptcy is discharged and a bill is left unpaid can third party collections attempt to collect on it?
A bankruptcy can be closed or dismissed. It cannot be "discharged." The debtor is discharged from having to pay any dischargeable bills. If the 13 was successfully completed, and the debt was listed as an unsecured debt if the unsecured creditors were paid something under the plan, it might not have been discharged. Many third party debt collection law firms and agencies are trying to collect discharged debts in violation of the permanent stay. It is illegal.