The customer care numbers for BSNL Andhra Pradesh and Telangana regions are:

BSNL General Customer Care: Dial 1500 from a BSNL number or 1800-180-1503 from other networks for general inquiries.
Broadband/Internet Issues: Dial 1504 from a BSNL number or 1800-345-1504 from any network.
BSNL Mobile Support: Dial 1503 from a BSNL number or 1800-180-1503 from any network.

These numbers should connect you directly to the relevant support team.