Stopped working in 2 months

Pack: 1Size: AP-5025B

I am in Chennai and purchased U80B model BP Monitor four years ago but was in packed condition.Now when I wanted to use it the air pressure is not building up. It is a made in China product. It is not worth getting it repaired at the only one service centre of in Faridabad. Customer support is poor.

Pack: 1Size: AP-5025B

Bought on 17th Feb 2024. Just completed one year and few months. It is not working now. Not getting display. Unable to contact them through their mail ID given on the monitor or the phone number. Don't know how to get it rectified.

Pack: 1Size: AP-8820T