Just did the TNB Change of Tenant on myTNB web 2 days ago for my relative. Will update when it's completed. Account has been in previous houseowner's name for at least 30 years. 

20/8: Application Submitted
21/8: Ready for Payment (Deposit, Processing Fee & Stamp Duty) and Paid
21/8: Updated with new acc no. Can add but Inactive.
21/8: Status: "Pending Notice to Existing Cus"

Now ToU change application very very fast. I did before tidur.

1:24am: Submitted application. Made sure I crossed the IC with "For TNB purposes only" bcos my cousin's application got rejected for that.
1:25am: Immediately received notice for stamp duty payment. No need to pay immediately.
4:15am: Completed.
9:25am: Received non-ToU bill (5 days) already.

Must be ChatGPT handling the applications now.