No assistance from this bank at all - I'm at a loss!

I am currently overseas and have been using my ABSA credit card. My account and card have just stopped working as of 25 May. Almost 2 weeks later... 4 calls to the call center as well as emails and I am still completely *****ed. I am at risk of losing memberships and look like an absolute idiot to businesses as my debit orders are now bouncing too eventhough the account is in good standing. Never in my life have I struggled with what WAS a reputable Bank that I've been with for almost 5years. If this issue doesnt get resolved this week I'm cutting my losses.