How to block SMS from classmates on the phone?

Question

Classmates

Please tell me: spam is falling on the phone, someone is trying to hack into the Odnoklassniki account. Part of the spam comes from a short number, which I blocked on my phone. But part of the spam comes with a hidden number, OKru just shows up. Naturally, I can not block it, the phone writes "invalid number". Is there any way to block such SMS spam on the phone or just untie the phone from the account?

Answer 1

Just unlink the number and that's it, but if in the settings of classmates there is to disable SMS notifications, it's better to turn it off, but since this is a password recovery, it's better to just unlink the number