Ticketmaster's lack of customer support and action

I purchased tickets for the Johannesburg leg of the Justin Bieber concert, I then wished to swap these tickets and attend the Cape Town leg instead. I was told via email that this is possible and all I had to do was purchase the CT tickets and that they would cancel the Joburg one and refund me the ticket value. The CT tickets were purchased and Joburg ones cancelled on my profile on 03/08/22 however I have still not received any refund for these tickets and it is now 2 months since that. The worst part is they have no efficient communication channels, they only communicate via email, and take forever to respond. There is no contact number to speak to someone and get proper help. Every time I log a new ticket a different agent attends to it and they don't grasp the issue and keep responding with a general message relating to the refund of the concert cancellation and not my specific query. The service is pathetic, and I will not be supporting Ticketmaster again.