Complaint

I purchased a blue voucher of R1000 via Capitec but was not able to redeem it , I reached out to Capitec client care line , my request was logged and closed on the 27th of November called again and they created another service request , spoke to almost all the agents , also spoke to someone by the name Tony and Promice me she will personally get back to me but never , I even emailed complaints and they contacted me but never assisted , today is the 10th of December and I’m Still not assisted can someone please help me all I want is refund or a new voucher