+1 (888) 383-9373
They sent me a payment link using the payment service Razorpay, which seems to be a legitimate service. When they understood that I wasn't the one they had hoped for they seemed very desperate to delete that email from my inbox, which I didn't let them do by closing the browser every time they opened it. When I then studied it closer I saw it had the address to the user 'U And Me Support'. When I looked that address up in Google Maps, it pointed at the location for 'U And Me Advertising'. So the address might be the right one.
704 G/F Military Road
Punjabi Basti
Anand Parbat, New Delhi
INDIA
https://www.google.com/maps/place/U+And+ME+ADVERTISING/@28.6544221,77.1733315,17z/data=!3m1!4b1!4m5!3m4!1s0x390d035f6063ec15:0xbec3f982b31925f2!8m2!3d28.6544221!4d77.1755255