RCS DELAYS ONCE AGAIN!!! EXCUSES AGAIN

I received a settlement amount from RCS after posting on Hello Peter, I did the payment and am now waiting for them to issue me with a settlement letter. This letter which i am awaiting is putting my life on hold and I need to move forward. What is it that they cannot issue a letter to say that they have received the settlement amount in full and final. How am I to move ahead with this blocking my credit record. This will be the 4th time that I must come onto Hello Peter to get a response from RCS. I hope that my next report will be one of praise and thanks.