Refund demand

In August 2014, I requested from PF that I settle/ close membership TAY0061. I received an email PF confirming that I could do so if I paid R858 which I did (I have the email). In July this year I got a call from SAYA recoveries to say that I owed PF R3852.50 as the membership was still active. I said I had closed/ settled the account in August. I contacted PF Customer service on numerous occasions and got nowhere. SAYA recoveries suggested I pay 50% to PF Holdings whilst I disputed the issue and then I could get a refund (I have the email). I duly paid R1926.25 to PF. Subsequently PF admitted one of their staff made a mistake last year by quoting me the wrong amount. However, I pursued my claim as I was oblivious to any \mistake". As far as I knew the membership was cancelled. On the 15/09/2015 I received this email: \""Good day the refund request has been approved and sent to the finance department for payment.\"" Today"