Refund My Incorrect Amazon Prime Charge

I am writing about an incorrect Amazon Prime charge on my Amazon UK account. I had previously cancelled my Prime membership, and when I checked my account it clearly showed that I had no active Prime membership. Despite this, on 24 July I was charged £8.99 for Amazon Prime. I do not use Prime and did not intend to renew it, and I relied on the information on my account page stating that there was no active membership. Being charged £8.99 in this situation is unfair, as I had already taken steps to cancel and to make sure that Prime was not active. I kindly request a full refund of the £8.99 taken on 24 July and the complete cancellation of any current or future Amazon Prime membership on my account so that I am not charged again without my clear consent.