Greed of RCS

I recently (02/09/2018) paid my RCS account up and have asked for it to be cancelled. I was then informed by the operator that it is not possible to close an account immediately. She said that even if the account has been paid up that RCS has a strict ruling of a 36 day waiting period before any account is closed. RCS charge exorbitant monthly admin and insurance fees and i feel they are trying to extract an extra months fees out of me before they close my account, "if i'm lucky enough" . it is sad that after 6 years of paying my account faultlessly that I am subject to such treatment. I have an account with Queenspark which i have also just paid up and after the treatment i have been given by RCS, i am now going to close that account since I found out that RCS are actually the credit providers.