Do you have a legal question about this or is it a computer problem?
Yes, there is legislation to stop this. It is called the Computer Misuse Act. However, whilst there is legislation to stop it, people break the law all the time and these hackers are doing exactly that.
By all means report it to the Police and to Action Fraud but they have millions of these cases to deal with.
Meanwhile, change your passwords to something which is complicated and contains: punctuation, letters, numbers and uppercase letters and lowercase letters.
There are various programs which will also go a long preventing this
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