Seat collects but doesn’t deliver Navi updates

Is there someone similar to me? I feel like I’m over the table. Seat can pay for a Navi update option expensively and then doesn’t deliver updates. There are half-yearly updates, some even more often. Seat hasn’t delivered an update for the Arona for over a year. Our Arona is two years old and just had a Navi update. You wonder if you can order the option again.