GoAir — baggage charges

Customers are charged for extra baggage above 15 kgs in domestic flight when they have international flight from next destination in spite of presenting their international tickets. When we are allowed 25+7 in international flight why are we charged extra for the same in domestic there should be some rule for international passengers baggage in domestic as well so that we are not harassed at the airport we are facing this problem every time obviously we visit india once a year for a month or so it’s not possible that luggage is 15 kgs it’s ought to be more so look in this matter and we don’t end up paying thousands of rupees jst for extra baggage