Bad service from DBS Bank

I wanted to pay my Standard Chartered credit card bill by GIRO from my DBS account. My relationship manager told me that I have to get a manual from from SC Bank, sign it and send it to SC Bank for processing.

DBS allows my to go online and submit my GIRO request to many organizations. But they don't allow it for payment of credit card to another bank? Why?

This is another example of the wasteful and inefficient practices that is allowed to happen in Singapore.

I wonder if the government or MAS will step in and ask the banks to wake up and help to improve productivity and reduce waste in Singapore.