Write to Monetary Authority of Singapore

If you wish to write to MAS, you can address your letter to:

Chairman
Monetary Authority of SingaporeConsumer
10 Shenton Way
MAS Building
Singapore 079117

You can send your letter by registered mail or by fax to
Fax : (65) 6225-9766.

If you wish to write to the Consumer Issues Department, you can follow this guide:
http://tankinlian.blogspot.com/2008/09/monetary-authority-of-singapore.html