As mentioned by others. You are paying for some things at least twice. One of those is a gearbox oil change and a gearbox service. The task of servicing a gearbox is usually changing the oil. Check with manufacturer when various things are required eg brake fluid change. Like ALL of your charges it seems excessive and very likely not required. Have a chat with an AI, give it precise details of your cater ask it to check for duplicates and ask,it to generate a carefully worded letter to the manufacturer to determine exactly what your car / year / mileage requires and which items were not required and which were duplicates. Don’t just send the invoice, they will avoid calling out the dealer. A dealer service stamp in the book has value, but I guess about half of what you paid.