Vodacom FTTH - Absolutely useless support

I've exhausted every single other attempt of getting my Openserve Fibre number from Vodacom and as usual it's a nightmare and cluster of incompetence at the most expensive fibre provider in South-Africa. In order to migrate to my new service provider Vodacom needs to give me the Openserve Fibre number which is also referred to as the B-Number, but no one at the company has a clue what I'm asking even though it's a standard procedure the service provider needs to have when working with Openserve as the customer can't contact Openserve directly. Sophia from the FTTH Support team has decided to become useless as soon as I signed the cancellation order and does not respond to any of my emails.