RCS has *****ed up on my account

On 8 Sept I had paid up my balance on my account, via the RCS app. I then called in to close the account & an agent told me I still had an outstanding interest rate amount of R104,41. I then paid this immediately & called back a few days later to close the account. I was then told that RCS owed me R130,94, but in order to get this refunded, I would have to pay a service fee. I don't understand this bizarre logic. I was then told by another agent that I should spend the exact amount in order to close the account. I received a letter signed by Clint Brink on 19 Sept stating the amount owed to me. Yesterday, when I asked an agent to send me my last statements, I see RCS had deducted a service charge on 12 Sept, leaving the balance they owe me at less than what this letter, furnished on the 19th, stated. For the longest time I have complained about not receiving my statements, to no avail. Yesterday I checked the acc which I haven't used since 4 July, & which has been paid up in full, only to see RCS stating I owe R1070,06. After numerous calls & emails, I've been told this will have to be escalated. I am now receiving SMS saying a deduction will be debited. I tried calling again today, & after holding the line for almost 10min, my call has been dropped by RCS. I am tired of having to do the run around for an error on RCS's part. I want this sorted out NOW. I DO NOT WANT THIS ACCOUNT ANYMORE, but I'm being given the run around for the past month. RCS wants to charge service fees for the acc being open, & even charge a refund which they owe...without the ridiculous interest they charge when you owe them money. This is not fair. I want this account sorted out & closed!