Account closing nightmares

I've been trying to close my Capitec Bank account since April 2021 without any success. I've sent countless emails to their customer serve email address, but lately they don't even bother to reply to my emails. I currently live in New Zealand, so it is not possible for me to visit a Capitec branch. I've only had good service while banking with Capitec, but trying to close my account is turning out to be an absolute nightmare!