5 /5 Chua Chung Yang: There was a miscommunication with th gym as my name was registered under my alias instead, hence their confusion below.
I had encountered issues with payments with regards to the gym, but they had managed to solve my queries and responded in kind.
After clarification with them, signing the cancellation form would take 30 days for the contract to be effectively cancelled. In my case, since it was a weekly subscription, there was 5 payments due instead of 4 simply due to a small gap between when my payment has started (Note this means for weekly subscriptions, 30 days does not necessarily mean 4 payments only).
For future gym-goers, the staff and owner there is generally receptive and responsive once you pop-in and clarify with them.