Hi, I am sorry to hear that.
This is a failed water inlet solenoid(electrical water valve).
It is an easy part to replace if you are a little handy and have a just a few basic hand tools.
I will help you all the way through this.
The new one comes with good easy to read instructions. The reason you couldn't turn it off more than likley is because the machine knows the cycles weren't running properly.
The best place to get that new water solenoid is : http://www.ransomspares.co.uk/
I would call them to order this part: Please call: Ransom Spares: 0844(###) ###-####
Once you have the part please also let me know so I can assist you;-)
In any case, I will stick with you until this is complete.
Please rate my service kindly.
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Thank you and have a great day!