ABSA stranded me in a foreign country with no funds.

Held ABSA BA Card for 6+ years. 95% of what time I have paid entire amount due, by due date, every month. This month forgot to pay due to being out of SA. Amount due R171. CR Limit R75,000. What do these *****s do? Without warning they block my card, leaving me stranded in a foreign country with no funds. ABSA exercises neither discretion or customer care. I have spent over R500 in futile efforts to contact their call centre. I would like that back. And I would like an apology for them putting a senior customer in possible danger.