What are illegal electricity top ups

Why shouldn't I buy top-ups on the doorstep?

How are you making sure that your customers are kept informed about illegal top ups?

I have information about someone selling electricity top-ups on the doorstep, what should I do?

I bought a discounted top-up on the doorstep, what should I do?

What action will be taken against me for buying an illegal top up?

I have been affected by illegal electricity top ups, will I need a new key to top up?

I have information about someone who has been selling gas top-ups on the doorstep, what should I do?