Company sending debt collectors to someone who doesnt have an account

I received a letter from bpo collections saying I owe money to them as virgin told them I owe them money.

As I don't have an account with virgin I called bpo to inform them of this and they informed me that an account had been in my name for 13 years was being paid to an address in Slough and that the email and contact information for this person were different and not even my name!

Despite this the collection agency refused to contact virgin to inform then of the discrepencies

After speaking to an advisor who then hung up I got through to another who told me to just ignore the letter. And everytime I try to inform some one of this issue they go "you haven't passed data protection" how can I? I don't have an account! I'm constantly calling to get this rectified but not a single agent helps all I need is my name removed from the policy then they can update their records so my credit isn't impacted