Pathetic lack of service and failure to honor promises from FNB

Its been a week that this has been going on and we are getting nowhere. I visited the Sandton City branch to purchase the Nintendo Switch console on the R369 a month offer, but they knew nothing about it although it was advertised on the FNB site and also on the Nintendo site (still there) The branch called the call centre and a lady named Cindy said she was going to get the stock and call me on Monday, Since Monday I've only had frustrations getting hold of Cindy or anyone who can help me. Cindy eventually called and said her supervisor was going to get the device and call me, Its been 4 days now and still no call. I escalated to the complaints department and all they continue to ask me is if I got a call, No any other form of assistance. Is this how FNB helps you, yet even complaining formally though the correct channel does not get taken seriously.