Hi Xoleil,
There is no doubt about this and it is a widely reported problem.
I would take a polite but firm, insistent, and “assumptive” approach. What I mean by assumptive is that they are well aware of the issue (even if they claim that your experience is the first time they have heard about it) so I would both “assume” that they know that the warranty exchange is only a matter of when not if and “assume” that they are well aware that it has been widely reported. I’m not sure if the inspector is coming to check for any mattress sagging or for the mold but I would call them and tell them that you don’t want to keep a mattress with black mold in the house for that long for health reasons. If they don’t move up the inspection then I would call Sealy and tell them the same thing and that you need to have the mattress removed as quickly as possible for health reasons and that Macy’s is not being co-operative. I would also let Macy’s know that you want an exchange for another mattress and not just a replacement for the one you have (and once again I would call Sealy if they don’t co-operate).
Once you are authorized to make the exchange … then post #2 here and the other posts it links to will be helpful in terms of how to choose a replacement mattress when none of your options with Sealy are very good ones. In essence what I would look for is a very firm mattress with the least possible amount of polyfoam or other lower quality materials in the upper layers and then adding your own comfort layer with a higher quality topper.
Phoenix