1. You should be aware that it is a criminal offence to harass someone under section 10 of the Non Fatal Offences Against the Person Act, 1997. So you should write back to Virgin Media and inform them that if they or their debt collection agency harass you for the debt that is not owed, you will report them to the Garda Siochana. Additionally, it is a further offence under section 11 of the same Act to harass or intimidate a person for a debt. So, you should write to both the debt collection agency and Virgin and make clear to them you will take action if they pursue you for the debt.
2. Although there is a dispute here about the debt, you should insist upon your rights and seek to ensure Virgin Media don't attempt to pursue you for the debt when it is not owed.
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