Product cancel and faild email not received by customer

I need mail must be send when admin or customer cancel the order, cancelled mail will be send to which customer order will be changed.
Not for multiple customers.

Hello

This is not for multiple user. it for booking cancelled mail send for customer.

Please see following filter

add_filter( ‘woocommerce_email_recipient_booking_cancelled’, ‘wc_send_booking_cancelled_multiple_addresses’ );

Above filter for when booking cancelled mail send for customer

Thanks friend and sorry for late reply….