Lee Mark Warns of Credit Card Fraud Tied to BPOs Restaurant owner Lee Mark Chang says Belize’s BPO sector is at the center of a growing credit card fraud problem. Chang says he has proof that stolen credit card details are being sold and used for online shopping, leading to hundreds of costly chargebacks from banks. While he admits call centers are vital to Belize’s economy, Chang warns this growing scam is hurting businesses so badly that restaurants may have to stop accepting online credit car