NO RESPONSE FROM CUSTOMER COMPLAINTS

I HAD A PLUMBER FROM 24FIX IN DECEMBER 2014 FIT A VALVE IN MY GEYSER DUE TO OVERFLOW. IT NEVER STOPPED, I HAD 3 CALLBACKS WITH THEM STILL DIDN'T FIX IT. I COMPLAINED ON THE EDGARS WEBSITE HAD NO RESPONSE, 5 MONTHS LATER IT STILL WAS OVERFLOWING, FEDUP OF THIS WE REQUESTED A NEW CALL OUT & ALWAYS ON CALL PLUMBER SAID THE GEYSER WAS BURST. I REQUESTED A REFUND FROM 24FIX AS THEY NEVER DID FIX MY GEYSER SINCE DECEMBER AND WAS TOLD THE GEYSER BURST LATER. I CANT UNDERSTAND IF IN THE FIRST PLACE THE OVERFLOW NEVER STOPPED AFTER THEM INSTALLING A VALVE, WHY IS IT THEY CANNOT REFUND ME. I SENT 2 EMAILS TO EDCON CUSTOMER RELATIONS AND RECEIVED A REPLY SAYING WILL RESPOND IN 48 HOURS 3 WEEKS LATER NO ONE HAS RESPONDED. 24FIX IS TOTALLY PATHETIC AND IF THEY CANNOT RESOLVE A PROBLEM WHY ARE THEY ON YOUR DATABASE. HOW CAN THEY CHARGE ME AND THE PROBLEM STILL NOT BE FIXED? THIS IS UNFAIR, & AS PER CPA IF A PRODUCT IS NOT WORKING IT SHOULD BE EITHER REPLACED, REPAIRED OR REFUNDED AND THEY DID NONE OF THIS. WHAT IS THE USE OF HAVING CUSTOMER SERVICE FOR COMPLAINTS IF NO ONE RESPONDS.