Well, if they can't replace like for like I would want a refund.
I have 2 GTX 470s, and I use them in SLI, a 560ti, although slightly better than a 470, would be utterly useless.
Then be sure to ask for MSI's contact information so you can raise that point with them. Otherwise? prepare to be disappointed.
Personally I think you have gone about it barse ackwards any way. I would have contacted MSI before anything else and asked for a replacement fan.
Simply shoot a video of the card doing what it does, and request a replacement fan.
Would have been far easier.