diff --git a/app/Services/BillplzService.php b/app/Services/BillplzService.php
index 0c22e9b..ae2ed79 100644
--- a/app/Services/BillplzService.php
+++ b/app/Services/BillplzService.php
@@ -211,6 +211,15 @@ class BillplzService
             return $data;
         });
         
+        
+        $summarizedBillplzTransactions = $summarizedBillplzTransactions
+                                         ->filter(function($x){
+                                              return $x['billplz_latest_transaction'] !== null;
+                                         })
+                                         ->filter(function($x){
+                                              return array_key_exists('completed_at', $x['billplz_latest_transaction']);
+                                         });
+        
         return $summarizedBillplzTransactions;
     }