Are these sentences grammatically correct?

1. With reference to the repair of our vehicle at your service center recently. It is observed that you had issued the tax invoice as per our old registration details. Our registration details have been changed. Therefore, we request that you to re-issue the tax invoice as per the new registration details attached.

2. This has reference to the tax invoice issued against our vehicle maintenance at your service center recently. It is noticed that you had issued the tax invoice as per our old registration details. Our registration details have been changed. Therefore, we request that you to re-issue the tax invoice as per the new registration details attached.