Cab driver Pierre Haifa, left, was only netting $ 25,000 as a taxi driver when Melrose Credit Union loaned Haifa and partner most of the $ 900,000 it cost to buy two Philadelphia cab medallions. Now Melrose is calling many taxi medallion loans and Haifa's lawyer, Eli Gabay, left, who represents 30 cab companies, is trying to come up with a resolution.