Non responsive Discovery Vitality

I have tried cancelling my Vitality membership but the call center has apparently been reduced and I have held on for 30mins on 2 occassions. I have also sent an email requesting a cancellation on 28th August and have received a reference number from an automated email but still have not been contacted by an actual person to deal with my cancellation request. What has happened to Discovery. At a time(Covid pandemic) that we need their response promptly we are left waiting... In hope