You should not need to contact the Church about the TPC.  But if you want to contact the Church about other things, you can do so at the address below.

Tokyo Union Church
Jingumae 5-7-7 Shibuya-ku Tokyo, 150-0001, Japan
Tel: 3400-0047 Fax: 3400-1942
E-Mail:
http://www2.gol.com/users/tuc/