A couple of months ago my login or phone got into spammers databases and since then bots add me EVERY DAY and offer something. How to stop this chaos? How to forbid me to be able to write randoms?
In the contact list, RMB on the name of this contact and select "Block this user". And then consistently and rigorously apply this procedure to all unsuitable subscribers. The list of blocked will grow - well, to hell with them.