if you hold a Hong Kong Permanent Identity Card, you do not need to apply a Macao visa to enter Macao. But as tourists without a HK ID, they must apply for visa in advance. You can try the Office if the commissioner of the Ministry of Foreign Affairs of the PRC in HK. The detail information is as follows:
Tel: 852-34132300( 24 hour Recorded Visa Information Service)
852-34132424 (Live Answering Telephone available in office hours )
Fax: 852-34132312
Email: mfa.gov.cn|fmcovisa_hk
Address：China Resources building, 26Harbor Road, Wanchai