Similar case with my booking. Received the vehicle on 7th July & was told invoice has not been received yet.
On indus website status showed invoice on 9th July. Called dealership today they said they still haven't received the invoice.
Due to price change alot of invoices are on hold by all manufacturers, I have even heard some OEMs are recalling invoices for vehicles invoiced after 20th June which they have already handed over. I wonder how are they doing that and what if in case of already registered vehicle.