Bad service

Experian keeps on showing an MTN account (Account no: A*** ) that I had reported to them as a ********** account. I gave Experian all the required documents in February 2019 and the internal investigation was conducted which cleared me and the account was removed. For the last 3 months, Experian has been allowing VVM to blacklist for this account. Has MTN provided any evidence that I opened this account? I need this account removed from my name for good.