Spent £60 on running shoes but after the first serious use they caused extensive blistering on my right foot owing to an issue with the insole position (prominent on an already prominent arch). Tried to return but refused because I had used them. When I pointed out that it only became clear after running two miles that they were causing issues that wasn’t good enough. Refused permission to speak to a manager too despite initially being told that would be fine. Worst of all, I was told that they could make an exception if I opened a Decathlon Account, which was a form of bribery. Really bizarre encounter all in. With no recourse I’ve emailed their customer services team