Poor Communication and Response on Claims

Hi

I have been struggling since last week to get my voucher as was communicated by the person handling my claim for accidental damage to my TV that was dropped. I have phoned in a few times, then get told they will send it shortly. The company that handles this has phoned me and said I will receive it within 15 to 20 minutes. It is now 3+ days later, still not received, the person handling my claim is also not responding to my requests. And I get a different person every time I phone the discovery number. Who can assist with this? My experience claim wise with Discovery Insure in the past year has worsened every time I deal with them, communication is very lacking.