Appalling service and no response nightmare!

I opened my business account in March 2017 and have been running my successful business through this account. I received a call from a consultant “A” as a cold call shortly after opening my account, asking me if I would like to open up a private client account and the amazing offers FNB can offer me. At the time I was not ready to move any accounts or open a new account and carried on with my business as per usual. About 6 weeks ago I decided I wanted to move all my private accounts to FNB as well and remember consultant ”A” called me(as my business accounts manager has not even called to introduce himself to me. I actually didn’t even know I had one of these people), so I called her out of decency to assist me with my account as she had made contact with me previously. This is where my nightmare starts. I was informed by consultant”A” that FNB could offer me two pre approved credit facilities, of which she sent through the quotes and I signed and sent back with ALL supporting documents for validation. TOO THIS DAY I HAVE NOT YET RECEIVED ANY FEEDBACK even after numerous follow up calls to her, to which many were not answered or messages returned, etc for one rude mail reply, and then having to go through my private banker consultant “B” which was then escalated to a senior banker consultant “C” as my private banker could not assist me. The senior consultant promised me to get back to me last week and to this day and even after I had to contact her and have sent 2 emails, including this morning, no one has even bothered to pick up the phone or reply to my mail. Is this the level of service that FNB offer??? My private client account is finally activated BUT I have not activated my card because I am STILL waiting for the thumbs up to do so, as I was advised by consultant “A”that I must not incur unnecessary bank charges while my application is being validated. Please note that I DID NOT apply for any facilities, these pre-approved facilities were offered to me. My business has taken a knock as I was relying on these funds to come through. 6 weeks later and I’m still sitting with zero answers! Is this the treatment I must be subjected to if I want to bring more business to FNB? Is this how you treat your client, just another number?? I’m horrified at how I have been treated and I STILL have not heard 1 word from anyone!