Tests Centres dont have staff other than examiners who are always busy.(Original post by Ambitious1999)
Not sure why a test reference number is important, you just take the test and either pass or fail.
Doing anything online erases any discretion and ability to chat to a real human. At the test centre they will have a list of tests and any available slots. If they have a free slot and you have a cheque why would they refuse your money after all DSA is a revenue earning service and if they get paid for a slot that’s vacant everyone is a winner.
What are you chatting about?
...and I'm jealous