Sharp India — ac is not doing cooling

Address: 30, lal quator, 208006

Ac is not at all doing cooling even after being on for 3 to 4 hours, make a zero ventilation in room and is making it suffocating for the person sitting this problem is since 15 to 20 days and I thought it might work somehow or might be because of weather but it still isn't working properly I need a mechanic or engineer as soon as possible, please make sure to resolve my problem