Tccl — Compelling to replace the working old set of box with a HD box and pay Rs. 750/-

I am residing in Narayansamy garden, Kodungaiyur, Chennai. 118. I am using cable connection for my TV from Parvathi Nagar, Vhaijayanthi Sree sat vision cable operator.
At present old set of box is working in my house without any problem, and today from the cable operator office called me over phone and asking me to remit Rs. 750/- for HD set of box immediately otherwise from tomorrow night your cable connection will not work.
Please reply me regarding this immediately as the time is short.
My email address is
[protected]@yahoo.com
Mobile number: [protected]