Terminate recurring bill payment

Thank you for your response @Carla_P, it's a recurring payment from my DBS account and not my credit card.

To terminate a GIRO arrangement, please complete and return the StarHub GIRO payment termination form to StarHub using the postage-paid mailer included with the form or fax to 6721-5051. Or you may wish to terminate the payment with your bank. 

Hi Carla, can I email the form instead? I'm overseas and currently serving 14-day quarantine in a hotel. I called the bank and they said that only the merchant can terminate it.

Thank you.