Personal experience - Few years back went to open an account at a bank BOB, India. In the morning I was in tshirt and jeans and everyone was too busy to help me. Just 3 hours later went in a black formals and I didn't even need to ask them for help. And I've had such experiences quite a few times.
I've had potential landlords spontaneously offer me a discount only because I was white, well-dressed and mentioned a 9 to 5 job. That certainly isn't fair.