private Service getService(Intent intent) {
   paymentPeriod = getPaymentPeriod(intent);
   serviceID = intent.getIntExtra(PaymentsFragment.EXTRA_KEY_SERVICE_ID, -1);
   if (serviceID == -1) {
     Toast.makeText(this, "Can not find utility service", Toast.LENGTH_SHORT).show();
   }
   return dataManager.getService(serviceID);
 }