Purchased the season but only got the first 5 episodes

If I had known I wasn’t getting the full season I wouldn’t have purchased it.

There was two options, buy episode or buy season 1. I clicked on buy season 1 and when I got to episode 6 the same options appeared again, buy episode or buy season 1. How many times will I have to buy season 1 to get all the episodes? This is misleading and I think I deserve a refund.