No help trying to settle and close account

On the 9th of January I requested a settlement letter via email as I want to cancel my credit card. I've followed up the request after 5 working days. I've wasted 200 rand trying to call but to this day I have not been in contact with a single member of Discovery Bank. I'm sure if I send a mail requesting to join then I'll have ringing phone all day.

Ref *** Ref ***

I just want to pay what I owe and be done with this account.

Does anyone care to help?