Poor Banking Relationships

In the past month we have seen a bank set interest rates according to status i.e. low risk customers get low interest rate, high risk customers get highest interest rates. The rates can vary from 8% – 16% (yes, double). The issue here is that the banks passed your loan request using their scoring system and still chose to penalise you! Would they really give you a loan if they thought you would not pay ? Also, would you go back to a shop that overcharged you ?