Direct Energy Essential Services

My husband set up an account with direct energy and got our address wrong by 1 number. He later corrected the mistake and paid the money owed. Several months later we got sent to collections for gas we didn't use, at an address we never lived at and so could not have received a bill for. They knew the address was wrong, because my husband called to fix it. They also knew we would never receive a bill for that account because the address was wrong. Now we have to pay for gas we never used or they can ruin our credit. Do not use direct energy.