Closed letter

I phoned the call centre request a closed letter because i wanted the account closed all what was due to them is paid and need the letter to send to Itc and have my profile updated because previously i defaulted on my payment.Now required a letter and was told that it takes 36 days to get that.I had another with another creditor who gave me the letter soon a I phoned because the payment was already reflecting on their side. The thing is soon as u don't pay their quick to send default information to Itc when needing to rectify your mistakes it takes long.