It is understandable that people want to use modern bank as their main banking hub but if Monzo only reports to callcredit, as it seems, it would be advisable if they also kept at least one current account with a legacy bank.
It is not fun to lack a strong credit record in the UK. It is essential to have it with all major agencies. A current account with a high street bank will maintain your record withh Experian, Equifax and CallCredit. A current account with Monzo will add to it. But don’t get rid your old-fashioned high street bank account just yet. It might help you and it definitely won’t hurt you.
Callcredit is now called Transunion and is actually the UKs fastest growing and second biggest credit reference agency so you should never have an issue with them. My Transunion credit file is by far the most accurate and comprehensive reflection of my finances
The error that @Jordan02 received sounds like a company which hasn’t updated their sort code file in a long time
This is because the company still hasn’t updated their sort code validation lists, something they’re supposed to do (as per BACS rules) every month, and yet the sort code was created in April last year I believe, so they’re more than one year behind.
I’d say you dodged a bullet there. Don’t give these idiots any of your money and choose a more competent provider.