Singtel Customer service Phone number, Office Address, Support Contact, Email ID, Toll Free Helpline– SINGTEL with over 600 million clients all around the world is one of the fastest growing Telcos in Singapore. Singtel provides various services such as ISP (SingNet), IPTV (Singtel TV) and mobile phone networks (Singtel Mobile) and fixed line telephony services. To provide support to such a huge client list they have integrated a Big support system network. Here is the list of all possible ways you can contact Singtel and get your problem resolved.