Den Networks — Worst service ever

Address:

Raigad, Maharashtra, 410218

We have installed a den set top box from a local cable operator today i.E 1st may 2016 operator said it'll get activated after two hrs but since he had installed it my stb is showing security problem with error code 11 and i'm trying to connect that cable provider he's not answering the call..And on top of that he took 2000 rs for den's standard stb
Cable provider's name: sai vision
Contact: [protected]/[protected]
Location: kalamboli, navi mumbai
Den must impose some strict actions on such unprofessional cable service providers
This sai vision cable service is sheer fraud
Need refund as it doesn't seem anyone going to assist us on our issue