Netshort Doesn't Do Refunds They Just Keep Charging

I had signed up for a free trial with Netshorts for a weekly subscription of 24.99, but I cancelled it and the cancellation never took effect. Despite this, I have been charged every Sunday since June for this weekly subscription on my Visa debit card (Vault). In total, around 100 has been taken from my account without my consent after I tried to cancel. I contacted my bank and they have now frozen my card, but Netshorts has not resolved the issue and has not refunded any of the money. I also tried to handle it through their app, but I could not get the subscription properly cancelled or reach an effective solution. I request that Netshorts immediately cancel this subscription completely and refund the full amount that has been charged after my cancellation attempt.