Address (Hyderabad) Grand Atlantic Telecom Limited 2nd Level, 6-3-1186/3, Bal Reddy Building, Greenlands Hyderabad Andhra Pradesh 500016 Telephone +91-40-55366795/55366796 Fax +91-40-55824789 Address (Chennai) 49, Raja street, Laxman perumal nagar extension, Kottivakkam 600041 Chennai, India Telephone +91-44-24511850 eMail Website gatecall.com Timings 10:00 to 21:00