Terrible service. Can't even sign on as new client!!

So I accepted and offer for a new home loan from Nedbank and decided to make use of your offer of a better interest rate if I joined Nedbank and opened up an account. So your home loans consultant calls me to open up an account. I tell him that not only do I want to open an account, I would like to join Nedbank's Professional Banking and move over all my banking business from Standard Bank Private Banking to Nedbank. Including my cheque account, credit card, and both my savings accounts. Move over all my banking to Nedbank! So your professional banker consultant calls me, tells me I am approved for professional banking, tells me the assigned private banker will call me withing 48h to finalise everything. After that...nothing happens for 3 days. I get into contact again with the original home loans consultant that I dealt with. Tell him what happened, tell him to please get back to me so we can finalise things ASAP. He tells me that he will get back to me. This was last week Friday the 25th of June. My first contact was 22nd of June to join Nedbank. In more than a week you could not even sign on a new and willing client!!! What should I expect then from your banking service when I do actually manage to sign on? Seriously regretting even considering moving to Nedbank and think that maybe I should stay at Standard Bank after this experience? Is this what you call service? Please let me know what happened here if you care at all, would be really interesting to hear this excuse,that is to say if I even here back anything...