The financial regulator needs to investigate Discovery Bank

I am currently living overseas and am trying to cancel my discovery credit card account and stop getting billed for a card I will never use. I have phoned the international phone line specified on your website multiple times. Someone picks up the phone and it seams they cannot hear me even though I am speaking. Even tried will someone else's phone and it seems like they are doing it on purpose. I have phoned multiple other times and usually nobody picks up. Basically getting anyone though the phone is impossible and these calls are very expensive international calls.

I basically cannot cancel my credit card and am therefore getting billed for an account I will eventually not be able to pay when I close my SA bank accounts. If I cannot close this account within the next month I am taking this up with the financial ombudsman.