CITY JOBURG NOT REFUNDING DEPOSIT SINCE 2010

I have been struggling since 2010 with City Joburg to close my account and refund my deposit. At last I was informed that the account was closed. An application for a deposit refund was lodged by myself on 8 June 2015 and a reference number was processed. I was told it would take about 6 - 8 weeks for the refund to be paid out. Well, it is now 3 months and still waiting!!! 5 emails later to the person at the walk- in center who assisted with the application for the refund and who supp**** us with a reference number, I am now informed FURTHER DOCUMENTATION is NEEDED!! This is absurd! I already handed in ALL the requested documentation and reference number was processed. If further documentation was needed how is it that reference number was processed and told it takes 4-6 weeks and now after 3 months they are still playing for more time by saying they need more documentation!!!