Tata Teleservices — non receipt of security deposit koramangala blore

Address:

560046

Dear team,

I had submitted my walky at koramangala bangalore office of tata tele services, there was isd deposit which i should receive till date i have not received.
The instrument was submitted to mr ramakrishna at 10- may-2018
The land line number is [protected]
The email too was sent on the same subject but of no resolution

Pls help in getting the same.