Consumer Redressal

I had purchased two split AC for 1 TR and 1.5 TR for my office and home from a Dealer, within 4 months from the date of purchase both the AC started giving problem i made a complaint to the dealer and also to the company, the dealer would get the same rectified but again within 20 to 25 days the problem again starts, last week again the problem started and i again sent a complaint to panasonic and the dealer and informed them i need a replacement but they refused for replacement and again repaired and sent the AC to me. i need replacement for both the AC.