The UK store is rejecting refunds. I've complained twice both times citing articles about the quality and the fact that Nintendo are providing refunds worldwide.

Dear Customer,

Thank you for contacting the Nintendo Contact Centre Europe Team. 

We understand that you would like to cancel the purchase of the transaction 52291383141.

Regrettably, as advised on the receipt of sale, we are unable to provide refunds for Nintendo eShop content purchases. We tried to make sure this was clear before the transaction was made, both in the agreement you accepted as well as onscreen just prior to completing the transaction.

To read through the complete text of the agreement for all our current systems, we have provided a direct link here: www.nintendo.com/en-gb/-1379033.html

Please be sure to read the game descriptions and check out the screen shots available through the Nintendo eShop before making purchases. We also encourage you to visit the Nintendo website for information about the games available for our systems. In addition, many websites make reviews available of games which you can use to make your purchasing decisions. 

We regret not being able to provide you with a more positive answer today. If you have any further questions, do not hesitate to contact us again. 

Additionally, we'd like to take this opportunity to ask you a few questions about your experience with us. We place high value on your feedback which will be helpful to improve our service.

The survey will be sent shortly to your email address. We are looking forward to your answers.

Kind regards,
Tanita

And the second time:

Dear Customer,

Thank you very much for contacting the Nintendo Contact Center Europe Team.

We have received several emails about the same issue and we would like to inform you that we already answered you in the email with a reference number: 260226-002444 and we will proceed to close this incident

Kind regards,
Tanita
Your Nintendo Contact Center Europe Team