STOP DEDUCTING MONEY FROM MY ACCOUNT!!!

Is this legal?? MrPrice Mobile is deducting money, even though I blocked you from my bank account. I did not permit you to deduct money from my account. You are deducting for a service I am not using. The sim card has not worked, since September 2019. What am I paying for? The 2 year period has ended in September 2019. A year later and you are still taking my money, WHY?? I want answers. How and why are you still deducting money from my account? You have NO right!!