Hi Domantas,
Thank you for your order and for sharing your feedback.
Pokémon changed the size of the newer booster bundles, and we clearly state this at the very top of the product page in red text to help avoid confusion. We find it unfortunate that this seems to have been missed during ordering.
That said, there is absolutely no need to throw them away. We have not received any message from you yet, but we just contacted you by email, we are happy to help you with a return and refund.
We do find it unfortunate that you did not reach out to us first, as we are always ready to assist and help where needed.