Bill seems to be more expensive after switching to Keppel. Had to contact them to verify. It was explained that they get the readings from SP group and the usage figure are estimated. Turns out it was overestimated and I received a rebate the next month.
Subsequently, they titled my August bill as September bill. Also, even though Giro was set up and payment had gone through for the August bill, it was reflected as unpaid and being rolled over to September bill.
Long story short, there were lots of hipcups and stress. Even though they could be fixed by calling the service hotline, had to waste quite a lot of time (it’s not easy to get through to a customer service agent, had to hold for pretty long).