Platinum Card Call Center not worth the extra fees

After the acceptance of the quote to upgrade my Gold Credit Card to a Platinum Credit Card (signed quote sent to FNB on 1 June 2015), I've spoken to three Platinum Credit Card division agents (***) to upgrade my limit to the limit on the quote, without anything being done except various emails being sent to the Limit Department regarding the updating of my credit limit to the limit that was accepted on the signed quote. It is now closer to two months after the date that I sent the signed quotation through to FNB and still nothing has been done. Speaking to the agents, they confirm they can see the escalations that have been lodged previously when they look at my account. Since upgrading to a Platinum Card account holder, I've had no joy whatsoever with FNB's service and with the vastly increased monthly fees that I'm paying, I expect vastly better service than this! Can this please be sorted out today (24 July 2015) still, because I'm really not prepared to wait for another \5-7 working days"period to see if the credit limits were actually adjusted this time or not"