Airtel — internet not connecting frequently

Address:

Dewas, Madhya Pradesh, 455001

I am a physically handicapped senior citizen. I cannot go out as I cannot walk without support. I live with my wife who is paralysed on the left side. I use a Net setter and Airtel SIM for the internet on my PC.I am a writer and astrologer. I need internet connection to pay bills online and recharge my SIMs, I need internet connection to email my writings and make horoscopes and read various articles on astrology, science and health, and news. I need internet connection to email my my answers to clients' questions. But frequently the internet refuses to connect, no matter how hard I try. Then all my plans or works stop.