Banglalink Customer Care Number to talk with Customer Representative 121 - Free IVR for all banglalink pre-paid, post-paid and call & control customers. customer can get various services and service related information from this number. 111 - Helpline for all banglalink pre-paid, post-paid and call & control customers. customer can talk to a customer care representative . Banglalink Customer Care in Dhaka 1. Banglalink Motijheel Customer care Humayun court, ground floor 21 Motijheel C/A, Dhaka-1000 2. Banglalink Gulshan-2 Customer care Rangs Arcade 153/a, Gulshan North Avenue (ground floor, south side) Gulshan Circle-2, Dhaka-1212.