I cancelled my subscription with Elite Singles

I cancelled my subscription with Elite Singles, two days before the renewal was due. They still tried to take another 3 months subscription money from me (individual card details are held on file). However, I had cancelled the card I used for my original 6 months payment. As a result, they were unable to take more money from me. They then emailed me several times demanding payment! I responded to advise that I had cancelled my renewal subscription, 2 days prior to the renewal date. They have now sent me a letter, again demanding payment, to which they have added admin costs. They are threatening that non payment could lead to additional “debt” amounts being added, and the matter passed to their debt collectors! This organisation is unethical!