Incorrect credit report sent to Clear Score

On air have sent a negative credit report to Clear Score on my behalf. I have paid my installments monthly except in November when I mistook their first debit order for a ****. I however paid all the due amount in the beginning of January and every month until end of May. On air due to their incompetence have continued to send me messages, stating that I'm in arrears, I sent them proof of payment as they requested but still my account was not updated. I joined Clear Score only to find that my credit report states that I haven't paid for four months. I called and texted them but my problem has not been sorted out until now.