T24 Mobile — i lost my number somewhere i want to deactivate this number

Address:

Lucknow, Uttar Pradesh

I have lost my t24 sim number ([protected]) and i'm scared it would be missused by someone and its on my father's name so please do something and deactivate and remove all its service of it as fast as possible and deactivate it today or anyone can cost harm on my father's name so do it today only it will be very greatful of you please and inform me about it to as fast as possible so that i can relax...
Thank-you