I was instantly rejected for the SBI Cashback card due to 'internal policy,' and it seems my credit score and history didn't matter. Can I really increase my chances with PSU banks, or are the 'cooling-off' periods and existing relationships just a myth?

Doesn't the accumulation of standard transaction fees, when added to the minimum balance penalty, create the biggest and most immediate financial shock for customers?

To keep my "free" bank benefits, I need to maintain the average quarterly balance. If I fall short, how exactly are the free deposit and transaction limits impacted, and do extra charges apply?