Possible Clues:

• Persistent getting up final account — promises to pay
• Indefatigable
• Persistent, and flying out in case
• Number on account is associated with debts of resolute patient-type
• Showing doggedness wrongly put into cause
• Number on account is associated with debts of resolute patient type
• Firm can set out to limit debt
• Firm flying out in case
• Dogged — unyielding
• Persistent cautions: police finally moved