Complaint - Claims Submisisons

I submitted a claim that was within the three months allowed to do so - for a Dentist Bill of R1300. Discovery never got back to me with any feedback other than a claim summary and that's not what I asked for - I submitted a claim because I had to pay cash for it and was now claiming the money back and zero feedback was received, despite numerous emails and correspondence. I have experienced this before - they are quick to "take your money" and will chase you for funds, but as soon as a claim is submitted, well, they take their time. Following this, the three months has now lapsed and it still leaves me out of pocket.