finished customer form and update

app/models/sale_payment.rb

@@ -54,10 +54,8 @@ class SalePayment < ApplicationRecord
       #record an payment in sale-audit
       remark = "Payment #{payment_method}- for Invoice #{invoice.receipt_no} Due [#{amount_due}]| pay amount -> #{cash_amount} | Payment Status ->#{payment_status}"
       sale_audit = SaleAudit.record_payment(invoice.id, remark, action_by)
-      sObj = Sale.find(self.sale_id)
       
-      response = rebat(sObj)
-      return true, response
+      return true, self.save
     else
       #record an payment in sale-audit
       remark = "No outstanding Amount - Grand Total [#{invoice.grand_total}] | Due [#{amount_due}] | Paid [#{invoice.amount_received}]"