FNB Igonring their Customers

Early on in the year i purchased an item online and when the seller did not ship the item i opened a FNB dispute and outstanding authorization reversal request online. This was opened on the 15th of September and i received an automated message saying that FNB will respond to my request within 5 business days. In over a month i have received no response from FNB about my issue and any message that i send to FNB is either ignored or i only receive the same automated response. To date i have received no indication that my request has even been read by a human. FNB has no sense of customer service and i am hugely dissatisfied.