By THE PULSE NEWS MEXICO STAFF A now-defunct oil company, Oceanografía, filed charges against the Citibank Group’s soon-to-be-sold Mexican subsidiary Banamex of fraud on Monday, Jan. 24. Oceanografia, which was once Latin America’s largest oil and gas company, valued at more than $3.5 billion, collapsed in 2014 after defaulting on loan payments. Citigroup allegedly gave Oceanografía a $585 million credit