not sure why socialism precludes etiquette?

I could relate to your telephone etiquette problem. I live in Venezuela and often a wrong number will say
very indignantly “Quien es?” after hearing my gringo “Hello”. I now just cut the interaccion, perhaps rudely,
to avoid versions of past conversations by saying, “numero equivocado”, ” wrong number”. I used to say, “Con quien deseas hablar?”, “With whom would you like to speak?” I was taught that the caller is to identify themselves first and then request the person they wish to speak to if they dont recognize your voice. But here it seems to have been, in with socialism and out with etiquette. Thats my home phone situation. I don´t have caller ID On my cellphone I no longer answer unidentified numbers due to extorcion calls. I suggest to people calling someone who will not have you identified in their phone, to pass them a text first stating your intentions of calling and the number to be aware of.