RCS not closing paid up accounts and not updating ITC!

I Have RCS - Queenspark, Makro, Game, Loan all have been paid up in full! Queens park paid well over 1 year ago! i keep phoning in to ask them to close the accounts and send me a paid up letter as well as update with ITC. Queenspark a year later is still not closed. All accounts still reflect on my ITC. I am trying to buy a car and my pre-application wont go through because i am over spent!!!!! all as a result of RCS not closing my accounts that have been requested telephonically for a year +. I called two weeks back i was told they will send details to ITC and it will take 72 hours to reflect...this was clearly not done. i called again today for the 100 time and now im told that i must email RCS to have ITC updated. In all the calls i make this is the first time im told this. RCS STOP PLAYING DELAY TACTICS AND DO WHAT THE CUSTOMER ASKS. CLOSE MY ACCOUNTS AND UPDATE ITC!!