FNB MORTGAGE REJECTION FOR VAGUE REASONS

I am very disgruntled with the service I got from my bank of over 15 years. I have been so loyal with the bank and have hold all my investments and savings with this bank, with no defaults on anything , even my business accounts are with this bank , only to be rejected on my first mortgage loan application with this bank! with vague reasons. my other incomes are only considered @ 30% because of COVID19 situation while my credit capability alone can afford for my application .

If my own bank that I banked with for so many years is failing to assist me with what I need - a 100% bond loan then what must happen. what type of customers do you get to assist with no struggles? what is exactly required for you guys to give me what I want . if my other income was never affected by COVID19 during level 5,4'3 why would you not consider my 100% and be worried , its now level 2 for peace sake what other worst issues can we face comparing level 5 that makes you not to consider/question my affordability ?