negative opinion in credit report

[negative]

Hello, I have been with you O2 for a dozen or so years and I have never been late with payments, and Carphone Warehouse, the company that I use your services from, gave me a negative influence
, which caused my credit score to drop significantly, please explain the situation and why you gave me a negative review?
my phone number [removed]
I am asking for a conscientious and honest approach to my request.
Regards
Slawomir [removed]

[mod edit: we've removed some personal details as this is publicly viewable. Thanks]

[jonsie]

You need to contact the Credit Referals team on this

The email address is creditfilereferrals@telefonica.com

Or you can write them at

Credit File Referrals Team
Suite P
Arlington Business Centre
Leeds
LS11 0NE

[Enlli]

You say Carphone Warehouse gave the negative review?

Have you spoken to them?

[Oxonian]

Who do you actually make your monthly payments to @negative ?

Do you pay O2 or do you pay Carphone Warehouse ? 

I believe that only the business that you pay can amend or influence your credit score, and it is them that you need to speak to. 👍