Terrible service from Vodacom Fibre Department

I cancelled my Vodacom fibre line because I app**** in January and still was not connected in May even after Vumatel completed their part of the instillation in February. After going back and forth by phone, email, and social media with various Vodacom personnel, I received an email on the 3rd of July saying the cancellation has been completed (SR180 ********** 29) so I went ahead and contacted another service provider. The service provider is unable to complete the installation because even though Vodacom said they have honored my request, you still have not! What do I have to do to get my issue resolved?