WHY CAN'T I GET A CONFIRMATION LETTER!!!

I have a business ABAFANAS BNB AND CATERING SERVICES (PTY) LTD which banks with ABSA at the Newcastle CBD branch on 31 Voortrekker Street. I have been needing a bank confirmation letter so I can attach when applying for catering and accomodation jobs within the government sector. My Enterprise banker Mr Dawie is on leave, I have tried on 4 different occasions to get this confirmation letter and have consequently been disqualified on 3 project submissions as a result of not having this letter because each time I get there they say if my enterprise banker isn't available then NO ONE can assist me with this. I requested to see the Branch Manager today (25/01/2018) and when I got to his office, he gave me a hand gesture signalling to NOT enter his door as he was busy. I waited for an hour outside his door until I eventually ran out of time and patience for this unacceptable behavior. I have been banking with ABSA for years, all my personal, business and even home loan accounts are with ABSA, I absolutely resent how I am being treated with the utmost contempt at branch level and again I will have to loose out on yet another project submission. My ID number ********** 583088.