Minecraft store saying I have purchased certain worlds and skins

When I go to check my worlds and skins i've purchased in the minecraft store it's coming up with world and skins I haven't purchased saying to download them but when I click on them they then ask me to purchase them. It's saying that's there's over 100+ worlds and 20+ skins i can download but I haven't purchased them and don't know why they're showing up on my account