3 months and counting to close my account

My 1st email to RCS was on the 14th of August asking them to close my account. I sent them another email on the 7th of September asking them to please COMMUNICATE with me as to what the hold up is. Then only on the 22nd of September did they respond asking me for documentation to refund me as my account had a credit balance. I sent the docs to them the same day - 22 September - and I am still waiting till now to hear anything from them. I send them another email today (13 November) to ask them why they are not closing the account. Surely it cannot take 3months to close an account without informing me of what is going on. And I have had many other problems with them since opening this account. Horrible customer service.