Discovery Bank has no personal touch

It is so frustrating trying to be a client of Discovery Bank. I have life insurance and active with Vitality. I have been a banking client for 3 years now doing my day to day transacting. I love the VAS that comes with Discovery suite of products and would like to move all my Financials over. I have a 10K credit line with Discovery. Because I want to move all over I am requesting a 30k credit line. They are refusing based on a credit affordability report. First the values that they deem as living expenses are not accurate and over inflated. The Credit they deem I need to pay is wrong. I have submitted all statements showing the accurate commitments and living expenses and they still dont care to take a look at it. I out of interest asked FNB what Credit they can offer me as I have only a 20K with them at the moment and based on my income and expenditure witch they have correct they are willing to offer me R220K. How is this possible. I like Discovery products but the banking product is very difficult to get support or answers not generated by a system that is clearly wrong. My colleague is also a Discovery Banking customer, he works for me and I know what his income and expenditure is and he qualified for R80K credit line? That on its own only concluded that my credit application did not just take my Financials into account but other factors must have also been involved. I am so disappointed.