Dunno man, a guy phones you and says you owe $10 Million on your credit cards and if you spend only a few dollars more you go over your credit limit...
Now...if sane you wouldn't owe more than you can pay back and certainly wouldn't spend more after already this far in debt, but the only important issue to you is the Credit Limit. After all you will never be able to pay off those cards anyhow...party on!