Sorry to hear that.
nope. Don't get any cleaning products from kmart... Think the bmw leather cleaners/lotions are like $30 - 50? Always worth paying that bit more if anything for peace of mind. Are you sure you didn't get a cleaner for fake leather (alcantara)?
Also should prob have checked it on a small hidden area first
What colour is your leather? and the cleaner? The bmw one is white/cream