I've looked at previous posts on this topic which advise contacting customer services and the specialised credit rating department. Unfortunately since I no longer have a Vodafone account I can't get past the automated "enter your number" stage on the phone call: the number I used to have isn't recognised.
Briefly, there's a defaulted account entry on my Experian report for the sum of £15. This has to refer to a short-lived mobile broadband account which I took out in June 2016 and closed within two weeks. Both on live chat and in a local shop I've been assured that there are no outstanding payments owing.
Since this is having a drastic effect on my credit rating I'd be very grateful for any advice on how to get the false information corrected.
EDITED TO ADD:
I found another post on how to bypass the need to enter a current number (basically, just wait until the recorded message stops asking) and I'm currently talking to a very helpful and knowledgable lady who's as puzzled as I am by this. I'm now on hold while she's conferring with someone else and with a bit of luck they might between them be able to resolve things.
Many thanks.
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