xxx: SMS: "Jeremy Alexandrovich, do you think about a profitable investment? We are waiting for you at the bank’s offices. Your Sberbank." And I am never Jeremy Alexandrovich, if anything.

yyy: I am a client of Sberbank and I get the same messages with my I.O. This seems to be another mistake. Someone has registered their account on your phone number. For the purpose of the experiment, send SMS with the text 100 to the number 900.

What happens if I send a SMS?

ZZZ: What will happen? Jeremy Alexandrovich will be pleased to put someone 100 rubles :)