16 September 2020
as the above expert said send a legal notice if there is no reply of the notice then you can file a suit for recovery of money, as you are bared by the limitation act because 3years has laps, make sure you take the ground for delay because of COVID-19 for the institution of the suit.
17 September 2020
How can a legal notice bring the claim within limitation ? Answer is "no". Adopt some arm twisting tactics, disturb signals from the tower or sell the tower to some kabadi and recover your money from salvage.