Aircel — Removal of Tower from the roof.

AIRCEL installed a mobile tower on the roof of our building after making a contract with my father, the year which I don't have the information. But in the year 2016, my father communicated to the company that he is selling off the landed property and to remove the tower from the premises but he didn't get any response even after few reminders. Thereafter my father expired on 6th Feb2019 and the property, which was already in a selling contact was fulfilled and the property was sold. Till now the tower has not been removed and I don't know whom to contact and how to remove the tower. Kindly advise and help me to resolve the issue.

Details of address of installed Tower :
Smt. Vedasree Kumari Samanta ( Roof top of Ananda Rest House)
C/o Late Harihara Samanta,
Near Postal Dispensary,
New Bus Stand Road,
Brahmapur, Ganjam,
Odisha PIN 760001
Email : [protected]@yahoo.co.in
Mob [protected]