Dylan1982 wrote:I have NEVER even used my Diamond Preferred card..
might be the reason.
If so, it's presumptuous of them to do a product change without asking. I have no idea whether that's something Citibank is known for doing. But it seems to be a likely explanation.
I've recently started getting mail offers for this card, except they've nerfed my 0APR offer to 12mo, not 18mo like they advertise online. The last offer just came a couple days ago.