BAD BAD BAD SERVICE AND NO ONE EVER CALLS YOU BACK

I HAVE TAKEN OUT A CONTRACT ON THE 6/01/16 WITH MTN FOR R599 PM WHERE ONE RECEIVE 500MB+200SMS+100MINUTES. IN THE 1ST MONTH ONE GETS 32GIG FREE TO USE WHICH EXPIRES AFTER ONE MONTH. HOWEVER WHEN MY 32GIGS HAD EXPIRE I DIDNT GET TO USE THE FULL GIGS THERE WAS APPROXIMATELY 15GIGS OF DATA LEFT. SO THE NEXT DAY I CHECKED MY DATA TO SEE WHERE IS MY 500MB WHICH I HAD PAID FOR. THERE WAS 0.00 I THEN WENT INTO THE CANAL WALK STORE ON THE 8/02/2016 QUESTIONING HIM WHERE IS MY DATA I PAID FOR AS YOU GUYS ADVERTISED THE 32GIG FREE SO WHAT THEN HAPPENED TO MY 500 MB I PAID FOR. HE SAID HE DONT KNOW HE WILL HAVE TO LOG A CALL. NO ONE EVER CONTACTED ME UP UNTIL TODAY. WHEN I CALLED THEM THEY SAID THE QUERY HAS BEEN RESOLVED AND THE CASE HAD BEEN CLOSED. I THEN SHOUTED AT THE AGENT SAYING HOW CAN THEY CLOSE A CASE WITHOUT CALLING ME. I HAVE CONTACTED THEM MANY TIMES AND THERE RESPONSE IS ALWAYS THE SAME O WE NEED TO LOG THE COMPLAINT THEN SOMEONE WILL CALL YOU. THEY NEVER EVER CALL BACK. I HAVE LOGGED 3COMPLAINTS WITH 3 REFERNCE NUMBERS WHICH NO ONE HAS EVER CALLED ME. I WOULD L;IKE TO CANCEL THIS CONTRACT WITH IMMEDIATE EFFECT I TOLD THEM AN NO ONE HAS CALLED. I HAVE EMAILED THEM BUT NO1 CALLS