You can watch following Tamil channels through StarHub:
Vannathirai, V Thamizh, Varnam, Sun TV, Sun Music, Zee Tamizh and Star Vijay. For more details:
http://www.starhub.com/personal/tv/combo-packs/thangam-migai-combo.html 

Address:
StarHub Ltd
67 Ubi Avenue 1,
#05-01 StarHub Green,
Singapore 408942
Singapore

Tel:
1630 (or +65 6820 1630 from overseas)
StarHub Public Hotline: +65 6873 2828

Website:
www.starhub.com 

Facebook:
www.facebook.com/StarHub