Why pay your TV licence when they owe me money??

I over paid my TV licence in October 2015 by R235 and no one contacted me to inform me of this. When I realised I called them and sent all my documentation, proof of payment and bank details with a bank letter and they say this is incorrect documentation and want my bank statement. I will not supply this as this has personal information on it. No matter how often you phone Lindsey she is too important to take any public calls and when you reply to their emails it bounces back or you never hear back from them despite leaving 100 messages. I tried talking to her boss Mr. Damons and he also does not take calls and has ignored all my emails. I then tried escalating this to Fakir who is some important head and have not heard anything. So how am I supposed to get hold of anyone who can actually solve this issue of money owed back to me? Their call centre is just as useless! Even customers that do pay their TV Licence receives such pathetic service! From October to now this saga is not resolved...