Fastway Transmissions Pvt. Ltd — Harassment from Operator End

I am using the fastway connection from last 4 years. On dtd.14-07-15 my STB has stop working, not getting power ON. I have call my operator (Vij Cable-[protected]) for the problem. Then operator has come and take my STB with him. After so many calls, yesterday they have return me other box and charge rs.200/-. But That unit is also not getting power ON. Now operator is saying that your adaptor is faulty and asking rs.150/ for adaptort replacement. If adaptor is faulty then why they replace the STB . And if both the units are faulty then why they don't report at the same and replace the both units at same time. Now connection is not working from 14-07-15 to till date... I don't understand what kind of service they are providing...