Incorrect information logged with Experian

For some reason my wife's MTN service was suspended despite payment been made timeously for July and August 2020. She went into the MTN branch at Melrose Arch with the proof of payment for these months and they reinstated her service. When she queried why this happened they could not explain but said it was probably a 'systems error'. As the contract is in my name I checked this morning on Experian and see that MTN Service Provider have logged that I am a slow payer which is total nonsense. I kindly request that MTN remove this information immediately as it is false. We have proof of all the payments been made timeously. This was your fault.