Credit Report Ruined for a year!

I wish I had come to this platform sooner, I settled my account in SEP 2019 and was told in November that my account was paid-up - I've since had numerous Credit applications rejected and a Ruined Credit Report because RSC failed to update my payment history at the Credit Bureau since I paid the account in Full last year. Only today I finally reached a helpful person by the name of ShehaamR that told me the request to update my details was only sent on the 15/06/2020 (Again after I called a thousand times to find out why the issue had still not been resolved). Apart from Shehaam, this is the poorest Customer Service I've ever received and has ruined my life for a year now. Don't bother sending emails to "Specialized" or the "Complaints" addresses, you will be ignored.