Airtel — two airtel executive registered someone else account number and shop for airtel payment application in my mobile.

Address:

Mysore, Karnataka, 570001

While I was working in my shop two persons came as Airtel executive and asked me to install aitel payment application in my mobile phone so I can receive payments from customers and asked me to give OTP so that they can install Airtel payment application in my mobile and they left saying application will be installed.but to my surprise I received a SMS stating shop name ms pharmacy and bank account number which I don't know.
I went to police station they simply suggest me to cancel Airtel application in my mobile. Please help me.