7 days & no assistance from Nedbank

I have been waiting for 7 days to speak to someone at Nedbank who can assist me with a Letter of Guarantee for a premises deposit which I have to pay for my business. I went to Nedbank Lonehill, who informed me that they were unable to assist and suggested I go to Nedbank Nicolway. Upon arrival at the branch, there was NO ONE who knew what I was talking about. I had to explain to them what a letter of guarantee was. The business banker told me that the person who could help me was not there, but they would cal me to make an appointment. 7 days later, and 5 phone calls to the bank, I still have no appointment, and no Letter of Guarantee. I left 2 messages for the branch manager to call me, but he hasn't phoned back once. I even called the Nedbank complaint call center, but they too didn't know what a Letter Of Guarantee was telling me to go to Nedbank Kempton Park for assistance?? I live in Fourways, and my branch is Lonehill! Why would I, or why should I need to go to Kempton Park? <br> The service, assistance and lack of knowledge is absoluty staggering. My business deposit is de to the Landlord today, and I have nothing from my bank. Seriously disappointed and annoyed.