Kim Zolciak-Biermann’s $2.6 million mansion has reportedly been foreclosed on and is set to be sold at auction in November. The reality star and her husband Kroy Biermann purchased their almost 7,000-square-foot home in Georgia in 2013. The couple took out a $300,000 loan, which they’ve failed to pay back, according to legal documents. In 2014, Zolciak and her husband received a fieri facias letter threatening to take the property. At the time, they owed over $10,000. It was reported that the original writ of fieri facias was “canceled,” but new documents reveal that the mansion was foreclose…