Tata Sky — Set up box bad quality

Dear Sir, I am using tatasky for the last 5 years. In first two years there services were very good but from the last three years there services level had been dropped considerably and now they become very greedy and Quality of setup box provided by them are very poor as they regularly becomes faulty as soon as there warranty period expires and cost of replacing the device is very high I.e 170 RS VISIT CHARGES AND 350 RS BOX REPLACEMENT CHARGES AND THE BOX THEY HAD REPLACED GIVES ONLY ONE MONTH WARRANTY. IN THE LAST TWO YEARS I HAD CHANGED MY SETUP BOX TWICE OR THRICE AND SUFFERED THOSE HIGH CHARGES. My tatasky id is [protected] and My contact no is [protected]