Mold in your home can be a real nuisance, and I completely understand that you want to get rid of it as quickly as possible—that stuff on the walls isn’t healthy, unfortunately.
Let me know what method you find!
Since you asked about cleaning marble earlier, here’s a quick but important note in case the mold is on or near natural stone (like marble windowsills or tiles): Many classic mold removers (whether chemical with chlorine or natural with vinegar) will immediately damage the surface of marble.
So let’s quickly check what kind of wall it is and what ingredients you want to use to get rid of the mold without damaging the wall. What’s your plan?