When I called American Express for the second time to explain why that's a bad idea (it will destroy my debt to credit ratio, which will destroy my credit score, which will cause an interest rate hike on my Visa, which means I can't spend any more money with Am Ex, which means they'll be losing money on me over time - especially when I pay off and close the darn account) I was told that I wasn't alone.  In fact (according to the lady I spoke with), eighty-nine percent of cardholders have received similar limit reductions including  my service representative (who claimed to have had 4 AmEx cards since 1991) and her supervisor.