Quick to make your name bad - Doesn’t want to help after you’ve paid!

Put a default on my name in April, only found out about it last month when trying to apply for vehicle finance. No phone calls or any notice was sent to me! Now I paid the full amount outstanding to close the account on 2nd October and I was told a Paid Up Letter would be sent to me within 3 days. Every day I phoned and got different answers and not one answer has solved my problem. Today is the 14th. How much longer must I wait to get a paid up letter to clear my name? Don’t understand how nobody can phone the creditors department? Even after paying on the 2nd, ITC hasn’t even been updated. So take my money, don’t give me service is how you wor****