Testora Cancellation And Refund

I recently discovered two unexpected charges on my Irish PTSB card from a company called Testora IQ Tests, even though I do not have, and do not knowingly recall agreeing to, any ongoing subscription with them. I only used their service once last month to take a test. On 26 August I was charged €23.00 and on 27 August I was charged €8.49. I did not give clear consent for any recurring payments and was not properly informed that I would be charged these amounts on an ongoing basis. I request an immediate full refund of both payments and the cancellation of any existing or future subscription or automatic charges linked to my email address paulcahi***[email protected]. I also ask you to confirm in writing that my account has been fully cancelled and that no further amounts will be taken from my card.