Tata sky subscription period is 25 days instead of 30 days

Hi All,

we know every service providers is offering subscription period for 30 days. But the tata sky most popular dish tv is proving subscription period to their customers only 25 days instead of 30 days for a month .
This is only of tricks they are using to loot the money from their clients. I verify with one of my client in chennai .

According to them they will collect 14 months payment instead of 12 month a year