UPGRADE NOT PROCESSED FOR OVER 3 WEEKS

1 JUNE I CALLED MTN DIRECT TO UPGRADE AND SPOKE TO DANELL AND WAS TOLD TO WAIT 2 DAYS FOR AN SMS. AFTER 3 DAYS I EMAILED DANELL AND GOT NO RESPONSE. 12 JUNE I PHONED AND SPOKE TO KREASON WHO TOLD ME MY CREDIT LIMIT WAS TOO LOW AND HE WOULD TELL DANELL TO SEND AN EMAIL TO RECTIFY IT. 17 JUNE I PHONED AND SPOKE TO JARED WHO SAID MY CREDIT LIMIT COULD NOT BE THE PROBLEM AS IT WAS STANDING AT OVER R6000. AND THE PROBLEM WAS THAT THERE WAS NO STOCK, HE SAID HE WOULD PHONE ME BACK THE NEXT DAY, I HAD NO RESPONSE AND PHONED IN ON 22 JUNE AND SPOKE TO HAGASHNI WHO SAID THAT MTN SAID MY AFFORDABILITY WASN'T HIGH ENOUGH FOR THE UPGRADE. (THE NEW CONTRACT COSTS R20PM MORE THAN MY CURRENT ONE) BUT SHE NOTICED THAT MY SALARY DETAILS WERE INCORRECT AND ASKED DANELL TO FIX IT. DANELL PHONED ME BACK THEN EVENTUALLY SENT ME A REF NUMBER THAT I THOUGHT WAS FOR MY APPROVED UPGRADE BUT SHE LATER TOLD ME I HAVE TO WAIT A DAY OR SO TO SEE IF IT IS APPROVED. I HAVE BEEN AN MTN CUSTOMER FOR 7 YEARS WITHOUT MISSING A PAYMENT, I HAVE TWO CONTRACTS WITH MTN. WHEN I UPGRADED MY OTHER LINE IN JAN I ALSO WAITED 3 WEEKS FOR THEM TO FIX A PROBLEM FROM THEIR SIDE. IM SICK OF THIS. WHAT EXCUSE WILL THERE BE NEXT?