diff --git a/apps/pg/models.py b/apps/pg/models.py
index 46d89ab..aac7600 100644
--- a/apps/pg/models.py
+++ b/apps/pg/models.py
@@ -156,6 +156,7 @@ class PNA(BasePGModel):
     client = PNAClient()
 
     def make_request(self):
+        self.payment_request.change_state(StateChoices.CREATED, StateChoices.IPG_PENDING, 'can not change state')
         amount = self.payment_request.amount
         description = 'from addwin ipg'
         callback_url = urllib.parse.urljoin(
@@ -164,12 +165,19 @@ class PNA(BasePGModel):
         order_id = self.id
         phone_number = self.payment_request.phone_number
 
-        response = self.client.request_normal_sale(amount, description, callback_url, order_id, phone_number)
-        self.pna_status_code = response['status']
-        self.pna_status_message = response.get('title')
+        try:
+            response = self.client.request_normal_sale(amount, description, callback_url, order_id, phone_number)
+            self.pna_status_code = response['status']
+            self.pna_status_message = response.get('title')
 
-        if response['status'] == 0:
-            self.pna_token = response['token']
+            if response['status'] == 0:
+                self.pna_token = response['token']
+
+            else:
+                self.payment_request.change_state(self.payment_request.state, StateChoices.FAILED,
+                                                  'error in pardakht novin gateway')
+        except Exception as e:
+            self.payment_request.change_state(self.payment_request.state, StateChoices.FAILED, 'error in pardakht novin gateway')
 
         self.save()
 
@@ -178,6 +186,10 @@ class PNA(BasePGModel):
             return self.client.pg_base_url.format(token=self.pna_token)
 
     def confirm_request(self, request=None):
+        if self.payment_request.state not in [StateChoices.IPG_PENDING]:
+            messages.error(request, "وضعیت تراکنش در حالت مناسبی نیست.")
+            return
+
         print(dict(request.POST))
         post_dict = dict(request.POST)
         if post_dict.get('status') in [0, '0', [0], ['0']]:
@@ -193,6 +205,8 @@ class PNA(BasePGModel):
                 self.details = response
                 if response['status'] == 0:
                     self.pna_status = StateChoices.SUCCESS.value
+                    self.payment_request.change_state(StateChoices.IPG_PENDING, StateChoices.IPG_SUCCESS,
+                                                      'error in change state')
                 self.save()
 
                 self.payment_request.charge_wallet_balance()