Discovery not refunding claims that they have messed up

On the 27/11/19 I submitted a claim for reimbur*****t to Discovery (ref no ***). They then incorrectly paid the service provider in stead of refunding me. I made a call to the call centre who advised me to submit a claim adjustment which I did on 10/12/19, ref no ***. There was again no response to the request for a claim adjustment. Subsequently I made a number of calls to the call centre to have this matter resolved (most recently on 10/01/20) but again the agents committed to resolve the matter within 2-3 days but nothing happened. I even received an e-mail from *** to offer to assist but my e-mails to them has also remained unanswered. The claim is quite substantive (in excess of R7000 and wit now appears that my only recourse if to try and claim the money through a legal process. From a quick scan on the web, it would appear that this is a problem that occurs quite often with Discovery so be warned!