Struggling to get the Settlement letter from RCS

Just know that if you want to close your account you will struggle, I already asked for my settlement letter four times for the account because I want to close it and they've been lying to me that they will send it with no luck, in the meantime they are charging interest, I paid the whole amount on the statement but struggling to get the settlement letter, it seems like they don't like it when you close the account and want to get you stuck with them in debt, I will spread the word to my family and friends that they must never open an account with them