Jimmy Nelson signed a $2,977,019.70 personal promissory note with Bartow County Bank, renewing financing for the family furniture business. After Nelson defaulted, Hamilton State Bank, the successor to Bartow County Bank, obtained summary judgment on liability and for $2,866,990.37. Nelson argued that the bank’s treatment of a related loan and collateral involving his business partner and cousin, Dolph, excused his own payment obligations, and he disputed the amount of the debt. The Court of Appeals of Georgia affirmed liability but reversed the damages award. Nelson was not a party to, or third-party beneficiary of, Dolph’s separate mortgage, equity line, or note, so he lacked standing to assert claims based on those transactions. The court also declined to extend Georgia’s “inextricably intertwined” debt doctrine beyond the foreclosure-deficiency context. Hamilton State Bank nevertheless failed to prove the amount due with competent evidence: the record did not explain the payment accounting, provide an amortization schedule, or supply testimony that allowed the court to verify the principal balance to the penny. Nelson’s uncertainty about the amount and failure to dispute the bank’s calculation did not cure that evidentiary gap. The court therefore affirmed the judgment that Nelson was liable on the note, reversed the specific damages amount, and remanded for further proceedings to calculate the debt.