fixes fixes fixes tenaancy

frontend/src/components/billing/PendingPaymentBanner.tsx

@@ -15,7 +15,7 @@ import PaymentConfirmationModal from './PaymentConfirmationModal';
 interface Invoice {
   id: number;
   invoice_number: string;
-  total_amount: string;
+  total_amount: string;  // Backend returns 'total_amount' in serialized response
   currency: string;
   status: string;
   due_date?: string;
@@ -75,8 +75,9 @@ export default function PendingPaymentBanner({ className = '' }: PendingPaymentB
         });
         
         const pmData = await pmResponse.json();
-        if (pmResponse.ok && pmData.success && pmData.results?.length > 0) {
-          setPaymentMethod(pmData.results[0]);
+        // API returns array directly from DRF Response
+        if (pmResponse.ok && Array.isArray(pmData) && pmData.length > 0) {
+          setPaymentMethod(pmData[0]);
         }
       }
     } catch (err) {