It is not mandated by BSP to interview customers via video call to get your "KYC" or know your customer details to update your customer record on their system.
You have a point, but as much as I hate what I'm about to say, I don't think there's a need for BSP to explicitly mention "how" they should gather those data.
They can actually interview us if they want, or they can request us to go to their office for an interview if we don't want to do it online. As long as it's mandated by the BSP, they would do the necessary steps to comply, so if we will not comply, they can just close our account so they'll not be penalize.
I'm not aware of the steps but KYC is really mandated.